mirror of
https://github.com/NativeScript/NativeScript.git
synced 2025-08-15 19:26:42 +08:00
1487 lines
47 KiB
TypeScript
1487 lines
47 KiB
TypeScript
import types = require("utils/types");
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import definition = require("ui/core/view");
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import style = require("../styling/style");
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import styling = require("ui/styling");
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import trace = require("trace");
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import gestures = require("ui/gestures");
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import styleScope = require("../styling/style-scope");
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import enums = require("ui/enums");
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import utils = require("utils/utils");
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import color = require("color");
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import observable = require("data/observable");
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import keyframeAnimationModule = require("ui/animation/keyframe-animation");
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import {PropertyMetadata, ProxyObject} from "ui/core/proxy";
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import {PropertyMetadataSettings, PropertyChangeData, Property, ValueSource, PropertyMetadata as doPropertyMetadata} from "ui/core/dependency-observable";
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import {registerSpecialProperty} from "ui/builder/special-properties";
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import {CommonLayoutParams, nativeLayoutParamsProperty} from "ui/styling/style";
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import * as animModule from "ui/animation";
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import {CssState} from "ui/styling/style-scope";
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import {Source} from "utils/debug";
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registerSpecialProperty("class", (instance: definition.View, propertyValue: string) => {
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instance.className = propertyValue;
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});
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registerSpecialProperty("text", (instance, propertyValue) => {
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instance.set("text", propertyValue);
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});
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function getEventOrGestureName(name: string): string {
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return name.indexOf("on") === 0 ? name.substr(2, name.length - 2) : name;
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}
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export function isEventOrGesture(name: string, view: View): boolean {
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if (types.isString(name)) {
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var eventOrGestureName = getEventOrGestureName(name);
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var evt = `${eventOrGestureName}Event`;
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return view.constructor && evt in view.constructor ||
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gestures.fromString(eventOrGestureName.toLowerCase()) !== undefined;
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}
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return false;
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}
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export function getViewById(view: View, id: string): View {
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if (!view) {
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return undefined;
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}
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if (view.id === id) {
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return view;
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}
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var retVal: View;
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var descendantsCallback = function (child: View): boolean {
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if (child.id === id) {
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retVal = child;
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// break the iteration by returning false
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return false;
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}
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return true;
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}
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eachDescendant(view, descendantsCallback);
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return retVal;
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}
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export function eachDescendant(view: definition.View, callback: (child: View) => boolean) {
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if (!callback || !view) {
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return;
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}
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var continueIteration: boolean;
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var localCallback = function (child: View): boolean {
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continueIteration = callback(child);
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if (continueIteration) {
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child._eachChildView(localCallback);
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}
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return continueIteration;
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}
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view._eachChildView(localCallback);
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}
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export function getAncestor(view: View, criterion: string | Function): definition.View {
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let matcher: (view: definition.View) => boolean = null;
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if (typeof criterion === "string") {
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matcher = (view: definition.View) => view.typeName === criterion;
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} else {
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matcher = (view: definition.View) => view instanceof criterion;
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}
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for (let parent: definition.View = view.parent; parent != null; parent = parent.parent) {
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if (matcher(parent)) {
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return parent;
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}
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}
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return null;
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}
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export function PseudoClassHandler(... pseudoClasses: string[]): MethodDecorator {
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let stateEventNames = pseudoClasses.map(s => ":" + s);
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let listeners = Symbol("listeners");
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return <T>(target: Object, propertyKey: string | symbol, descriptor: TypedPropertyDescriptor<T>) => {
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function update(change: number) {
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let prev = this[listeners] || 0;
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let next = prev + change;
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if (prev <= 0 && next > 0) {
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this[propertyKey](true);
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} else if (prev > 0 && next <= 0) {
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this[propertyKey](false);
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}
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}
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stateEventNames.forEach(s => target[s] = update);
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}
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}
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var viewIdCounter = 0;
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function onCssClassPropertyChanged(data: PropertyChangeData) {
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var view = <View>data.object;
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var classes = view.cssClasses;
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classes.clear();
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if (types.isString(data.newValue)) {
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data.newValue.split(" ").forEach(c => classes.add(c));
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}
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}
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var cssClassProperty = new Property("cssClass", "View", new PropertyMetadata(undefined, PropertyMetadataSettings.AffectsStyle, onCssClassPropertyChanged));
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var classNameProperty = new Property("className", "View", new PropertyMetadata(undefined, PropertyMetadataSettings.AffectsStyle, onCssClassPropertyChanged));
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var idProperty = new Property("id", "View", new PropertyMetadata(undefined, PropertyMetadataSettings.AffectsStyle));
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var automationTextProperty = new Property("automationText", "View", new PropertyMetadata(undefined));
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var originXProperty = new Property("originX", "View", new PropertyMetadata(0.5));
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var originYProperty = new Property("originY", "View", new PropertyMetadata(0.5));
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var isEnabledProperty = new Property("isEnabled", "View", new PropertyMetadata(true));
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var isUserInteractionEnabledProperty = new Property("isUserInteractionEnabled", "View", new PropertyMetadata(true));
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export class View extends ProxyObject implements definition.View {
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public static loadedEvent = "loaded";
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public static unloadedEvent = "unloaded";
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public static automationTextProperty = automationTextProperty;
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public static idProperty = idProperty;
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public static cssClassProperty = cssClassProperty;
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public static classNameProperty = classNameProperty;
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public static originXProperty = originXProperty;
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public static originYProperty = originYProperty;
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public static isEnabledProperty = isEnabledProperty;
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public static isUserInteractionEnabledProperty = isUserInteractionEnabledProperty;
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private _isVisibleCache: boolean = true;
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private _measuredWidth: number = Number.NaN;
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private _measuredHeight: number = Number.NaN;
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private _oldWidthMeasureSpec: number = Number.NaN;
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private _oldHeightMeasureSpec: number = Number.NaN;
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private _oldLeft: number = 0;
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private _oldTop: number = 0;
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private _oldRight: number = 0;
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private _oldBottom: number = 0;
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private _parent: definition.View;
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private _style: style.Style;
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private _visualState: string;
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private _isLoaded: boolean;
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private _isLayoutValid: boolean = false;
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private _cssType: string;
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private _updatingInheritedProperties: boolean;
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private _registeredAnimations: Array<keyframeAnimationModule.KeyframeAnimation>;
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public _domId: number;
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public _isAddedToNativeVisualTree = false;
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public _gestureObservers = {};
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public cssClasses: Set<string> = new Set();
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public cssPseudoClasses: Set<string> = new Set();
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public _cssState: CssState;
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public getGestureObservers(type: gestures.GestureTypes): Array<gestures.GesturesObserver> {
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return this._gestureObservers[type];
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}
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constructor() {
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super({});
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this._style = new style.Style(this);
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this._domId = viewIdCounter++;
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this._goToVisualState("normal");
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}
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observe(type: gestures.GestureTypes, callback: (args: gestures.GestureEventData) => void, thisArg?: any): void {
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if (!this._gestureObservers[type]) {
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this._gestureObservers[type] = [];
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}
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this._gestureObservers[type].push(gestures.observe(this, type, callback, thisArg));
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}
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public addEventListener(arg: string | gestures.GestureTypes, callback: (data: observable.EventData) => void, thisArg?: any) {
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if (types.isString(arg)) {
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arg = getEventOrGestureName(<string>arg);
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var gesture = gestures.fromString(<string>arg);
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if (gesture && !this._isEvent(<string>arg)) {
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this.observe(gesture, callback, thisArg);
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} else {
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var events = (<string>arg).split(",");
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if (events.length > 0) {
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for (let i = 0; i < events.length; i++) {
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let evt = events[i].trim();
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let gst = gestures.fromString(evt);
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if (gst && !this._isEvent(<string>arg)) {
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this.observe(gst, callback, thisArg);
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} else {
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super.addEventListener(evt, callback, thisArg);
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}
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}
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} else {
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super.addEventListener(<string>arg, callback, thisArg);
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}
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}
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} else if (types.isNumber(arg)) {
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this.observe(<gestures.GestureTypes>arg, callback, thisArg);
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}
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}
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public removeEventListener(arg: string | gestures.GestureTypes, callback?: any, thisArg?: any) {
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if (types.isString(arg)) {
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var gesture = gestures.fromString(<string>arg);
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if (gesture && !this._isEvent(<string>arg)) {
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this._disconnectGestureObservers(gesture);
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} else {
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var events = (<string>arg).split(",");
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if (events.length > 0) {
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for (let i = 0; i < events.length; i++) {
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let evt = events[i].trim();
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let gst = gestures.fromString(evt);
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if (gst && !this._isEvent(<string>arg)) {
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this._disconnectGestureObservers(gst);
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} else {
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super.removeEventListener(evt, callback, thisArg);
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}
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}
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} else {
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super.removeEventListener(<string>arg, callback, thisArg);
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}
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}
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} else if (types.isNumber(arg)) {
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this._disconnectGestureObservers(<gestures.GestureTypes>arg);
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}
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}
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private _isEvent(name: string): boolean {
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return this.constructor && `${name}Event` in this.constructor;
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}
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private _disconnectGestureObservers(type: gestures.GestureTypes): void {
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var observers = this.getGestureObservers(type);
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if (observers) {
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for (let i = 0; i < observers.length; i++) {
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observers[i].disconnect();
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}
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}
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}
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getViewById<T extends View>(id: string): T {
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return <T>getViewById(this, id);
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}
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get automationText(): string {
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return this._getValue(View.automationTextProperty);
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}
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set automationText(value: string) {
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this._setValue(View.automationTextProperty, value);
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}
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// START Style property shortcuts
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get borderColor(): string | color.Color {
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return this.style.borderColor;
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}
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set borderColor(value: string | color.Color) {
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this.style.borderColor = value;
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}
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get borderTopColor(): color.Color {
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return this.style.borderTopColor;
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}
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set borderTopColor(value: color.Color) {
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this.style.borderTopColor = value;
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}
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get borderRightColor(): color.Color {
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return this.style.borderRightColor;
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}
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set borderRightColor(value: color.Color) {
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this.style.borderRightColor = value;
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}
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get borderBottomColor(): color.Color {
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return this.style.borderBottomColor;
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}
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set borderBottomColor(value: color.Color) {
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this.style.borderBottomColor = value;
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}
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get borderLeftColor(): color.Color {
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return this.style.borderLeftColor;
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}
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set borderLeftColor(value: color.Color) {
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this.style.borderLeftColor = value;
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}
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get borderWidth(): string | number {
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return this.style.borderWidth;
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}
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set borderWidth(value: string | number) {
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this.style.borderWidth = value;
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}
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get borderTopWidth(): number {
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return this.style.borderTopWidth;
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}
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set borderTopWidth(value: number) {
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this.style.borderTopWidth = value;
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}
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get borderRightWidth(): number {
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return this.style.borderRightWidth;
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}
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set borderRightWidth(value: number) {
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this.style.borderRightWidth = value;
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}
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get borderBottomWidth(): number {
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return this.style.borderBottomWidth;
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}
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set borderBottomWidth(value: number) {
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this.style.borderBottomWidth = value;
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}
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get borderLeftWidth(): number {
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return this.style.borderLeftWidth;
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}
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set borderLeftWidth(value: number) {
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this.style.borderLeftWidth = value;
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}
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get borderRadius(): string | number {
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return this.style.borderRadius;
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}
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set borderRadius(value: string | number) {
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this.style.borderRadius = value;
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}
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get borderTopLeftRadius(): number {
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return this.style.borderTopLeftRadius;
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}
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set borderTopLeftRadius(value: number) {
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this.style.borderTopLeftRadius = value;
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}
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get borderTopRightRadius(): number {
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return this.style.borderTopRightRadius;
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}
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set borderTopRightRadius(value: number) {
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this.style.borderTopRightRadius = value;
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}
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get borderBottomRightRadius(): number {
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return this.style.borderBottomRightRadius;
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}
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set borderBottomRightRadius(value: number) {
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this.style.borderBottomRightRadius = value;
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}
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get borderBottomLeftRadius(): number {
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return this.style.borderBottomLeftRadius;
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}
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set borderBottomLeftRadius(value: number) {
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this.style.borderBottomLeftRadius = value;
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}
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get color(): color.Color {
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return this.style.color;
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}
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set color(value: color.Color) {
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this.style.color = value;
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}
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get backgroundColor(): color.Color {
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return this.style.backgroundColor;
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}
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set backgroundColor(value: color.Color) {
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this.style.backgroundColor = value;
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}
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get backgroundImage(): string {
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return this.style.backgroundImage;
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}
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set backgroundImage(value: string) {
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this.style.backgroundImage = value;
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}
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get minWidth(): number {
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return this.style.minWidth;
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}
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set minWidth(value: number) {
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this.style.minWidth = value;
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}
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get minHeight(): number {
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return this.style.minHeight;
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}
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set minHeight(value: number) {
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this.style.minHeight = value;
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}
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get width(): number {
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return this.style.width;
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}
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set width(value: number) {
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this.style.width = value;
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}
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get height(): number {
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return this.style.height;
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}
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set height(value: number) {
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this.style.height = value;
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}
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get margin(): string {
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return this.style.margin;
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}
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set margin(value: string) {
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this.style.margin = value;
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}
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get marginLeft(): number {
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return this.style.marginLeft;
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}
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set marginLeft(value: number) {
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this.style.marginLeft = value;
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}
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get marginTop(): number {
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return this.style.marginTop;
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}
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set marginTop(value: number) {
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this.style.marginTop = value;
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}
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get marginRight(): number {
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return this.style.marginRight;
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}
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set marginRight(value: number) {
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this.style.marginRight = value;
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}
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get marginBottom(): number {
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return this.style.marginBottom;
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}
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set marginBottom(value: number) {
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this.style.marginBottom = value;
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}
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get horizontalAlignment(): string {
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return this.style.horizontalAlignment;
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}
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set horizontalAlignment(value: string) {
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this.style.horizontalAlignment = value;
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}
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get verticalAlignment(): string {
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return this.style.verticalAlignment;
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}
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set verticalAlignment(value: string) {
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this.style.verticalAlignment = value;
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}
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get visibility(): string {
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return this.style.visibility;
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}
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set visibility(value: string) {
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this.style.visibility = value;
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}
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get opacity(): number {
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return this.style.opacity;
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}
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set opacity(value: number) {
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this.style.opacity = value;
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}
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//END Style property shortcuts
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get translateX(): number {
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return this.style.translateX;
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}
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set translateX(value: number) {
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this.style.translateX = value;
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}
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get translateY(): number {
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return this.style.translateY;
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}
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set translateY(value: number) {
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this.style.translateY = value;
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}
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get scaleX(): number {
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return this.style.scaleX;
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}
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set scaleX(value: number) {
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this.style.scaleX = value;
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}
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get scaleY(): number {
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return this.style.scaleY;
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}
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set scaleY(value: number) {
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this.style.scaleY = value;
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}
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get originX(): number {
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return this._getValue(View.originXProperty);
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}
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set originX(value: number) {
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this._setValue(View.originXProperty, value);
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}
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get originY(): number {
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return this._getValue(View.originYProperty);
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}
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set originY(value: number) {
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this._setValue(View.originYProperty, value);
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}
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get rotate(): number {
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return this.style.rotate;
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}
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set rotate(value: number) {
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this.style.rotate = value;
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}
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get isEnabled(): boolean {
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return this._getValue(View.isEnabledProperty);
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}
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set isEnabled(value: boolean) {
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this._setValue(View.isEnabledProperty, value);
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}
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get page(): definition.View {
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if (this.parent) {
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return this.parent.page;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
get isUserInteractionEnabled(): boolean {
|
|
return this._getValue(View.isUserInteractionEnabledProperty);
|
|
}
|
|
set isUserInteractionEnabled(value: boolean) {
|
|
this._setValue(View.isUserInteractionEnabledProperty, value);
|
|
}
|
|
|
|
get id(): string {
|
|
return this._getValue(View.idProperty);
|
|
}
|
|
set id(value: string) {
|
|
this._setValue(View.idProperty, value);
|
|
}
|
|
|
|
get cssClass(): string {
|
|
return this._getValue(View.cssClassProperty);
|
|
}
|
|
set cssClass(value: string) {
|
|
this._setValue(View.cssClassProperty, value);
|
|
}
|
|
|
|
get className(): string {
|
|
return this._getValue(View.cssClassProperty);
|
|
}
|
|
set className(value: string) {
|
|
this._setValue(View.cssClassProperty, value);
|
|
}
|
|
|
|
get style(): style.Style {
|
|
return this._style;
|
|
}
|
|
set style(value) {
|
|
throw new Error("View.style property is read-only.");
|
|
}
|
|
|
|
get isLayoutRequired(): boolean {
|
|
return true;
|
|
}
|
|
|
|
get isLayoutValid(): boolean {
|
|
return this._isLayoutValid;
|
|
}
|
|
set isLayoutValid(value: boolean) {
|
|
throw new Error("isLayoutValid is read-only property.");
|
|
}
|
|
|
|
get cssType(): string {
|
|
if (!this._cssType) {
|
|
this._cssType = this.typeName.toLowerCase();
|
|
}
|
|
return this._cssType;
|
|
}
|
|
|
|
get parent(): definition.View {
|
|
return this._parent;
|
|
}
|
|
|
|
get isLoaded(): boolean {
|
|
return this._isLoaded;
|
|
}
|
|
|
|
public onLoaded() {
|
|
this._isLoaded = true;
|
|
this._loadEachChildView();
|
|
this._applyStyleFromScope();
|
|
this._emit("loaded");
|
|
}
|
|
|
|
public _loadEachChildView() {
|
|
if (this._childrenCount > 0) {
|
|
// iterate all children and call onLoaded on them first
|
|
var eachChild = function (child: View): boolean {
|
|
child.onLoaded();
|
|
return true;
|
|
}
|
|
this._eachChildView(eachChild);
|
|
}
|
|
}
|
|
|
|
public onUnloaded() {
|
|
this._onCssStateChange(this._cssState, null);
|
|
this._cssState = null;
|
|
|
|
this._unloadEachChildView();
|
|
|
|
this._isLoaded = false;
|
|
this._emit("unloaded");
|
|
}
|
|
|
|
public _unloadEachChildView() {
|
|
if (this._childrenCount > 0) {
|
|
this._eachChildView((child) => {
|
|
if (child.isLoaded) {
|
|
child.onUnloaded();
|
|
}
|
|
|
|
return true;
|
|
});
|
|
}
|
|
}
|
|
|
|
public _onPropertyChanged(property: Property, oldValue: any, newValue: any) {
|
|
super._onPropertyChanged(property, oldValue, newValue);
|
|
|
|
if (this._childrenCount > 0) {
|
|
let shouldUpdateInheritableProps = (property.inheritable && !(property instanceof styling.Property));
|
|
if (shouldUpdateInheritableProps) {
|
|
this._updatingInheritedProperties = true;
|
|
this._eachChildView((child) => {
|
|
child._setValue(property, this._getValue(property), ValueSource.Inherited);
|
|
return true;
|
|
});
|
|
this._updatingInheritedProperties = false;
|
|
}
|
|
}
|
|
|
|
this._checkMetadataOnPropertyChanged(property.metadata);
|
|
}
|
|
|
|
public _isInheritedChange() {
|
|
if (this._updatingInheritedProperties) {
|
|
return true;
|
|
}
|
|
var parentView: View;
|
|
parentView = <View>(this.parent);
|
|
while (parentView) {
|
|
if (parentView._updatingInheritedProperties) {
|
|
return true;
|
|
}
|
|
parentView = <View>(parentView.parent);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public _checkMetadataOnPropertyChanged(metadata: doPropertyMetadata) {
|
|
if (metadata.affectsLayout) {
|
|
this.requestLayout();
|
|
}
|
|
|
|
if (metadata.affectsStyle) {
|
|
this.style._resetCssValues();
|
|
this._applyStyleFromScope();
|
|
this._eachChildView((v) => {
|
|
v._checkMetadataOnPropertyChanged(metadata);
|
|
return true;
|
|
});
|
|
}
|
|
}
|
|
|
|
public measure(widthMeasureSpec: number, heightMeasureSpec: number): void {
|
|
this._setCurrentMeasureSpecs(widthMeasureSpec, heightMeasureSpec);
|
|
}
|
|
|
|
public layout(left: number, top: number, right: number, bottom: number): void {
|
|
this._setCurrentLayoutBounds(left, top, right, bottom);
|
|
}
|
|
|
|
public getMeasuredWidth(): number {
|
|
return this._measuredWidth & utils.layout.MEASURED_SIZE_MASK;
|
|
}
|
|
|
|
public getMeasuredHeight(): number {
|
|
return this._measuredHeight & utils.layout.MEASURED_SIZE_MASK;
|
|
}
|
|
|
|
public getMeasuredState(): number {
|
|
return (this._measuredWidth & utils.layout.MEASURED_STATE_MASK)
|
|
| ((this._measuredHeight >> utils.layout.MEASURED_HEIGHT_STATE_SHIFT)
|
|
& (utils.layout.MEASURED_STATE_MASK >> utils.layout.MEASURED_HEIGHT_STATE_SHIFT));
|
|
}
|
|
|
|
public setMeasuredDimension(measuredWidth: number, measuredHeight: number): void {
|
|
this._measuredWidth = measuredWidth;
|
|
this._measuredHeight = measuredHeight;
|
|
if (trace.enabled) {
|
|
trace.write(this + " :setMeasuredDimension: " + measuredWidth + ", " + measuredHeight, trace.categories.Layout);
|
|
}
|
|
}
|
|
|
|
public requestLayout(): void {
|
|
this._isLayoutValid = false;
|
|
}
|
|
|
|
public onMeasure(widthMeasureSpec: number, heightMeasureSpec: number): void {
|
|
//
|
|
}
|
|
|
|
public onLayout(left: number, top: number, right: number, bottom: number): void {
|
|
//
|
|
}
|
|
|
|
public layoutNativeView(left: number, top: number, right: number, bottom: number): void {
|
|
//
|
|
}
|
|
|
|
public addPseudoClass(name: string): void {
|
|
if (!this.cssPseudoClasses.has(name)) {
|
|
this.cssPseudoClasses.add(name);
|
|
this.notifyPseudoClassChanged(name);
|
|
}
|
|
}
|
|
|
|
public deletePseudoClass(name: string): void {
|
|
if (this.cssPseudoClasses.has(name)) {
|
|
this.cssPseudoClasses.delete(name);
|
|
this.notifyPseudoClassChanged(name);
|
|
}
|
|
}
|
|
|
|
public static resolveSizeAndState(size: number, specSize: number, specMode: number, childMeasuredState: number): number {
|
|
var result = size;
|
|
switch (specMode) {
|
|
case utils.layout.UNSPECIFIED:
|
|
result = size;
|
|
break;
|
|
|
|
case utils.layout.AT_MOST:
|
|
if (specSize < size) {
|
|
result = Math.round(specSize + 0.499) | utils.layout.MEASURED_STATE_TOO_SMALL;
|
|
}
|
|
break;
|
|
|
|
case utils.layout.EXACTLY:
|
|
result = specSize;
|
|
break;
|
|
}
|
|
|
|
return Math.round(result + 0.499) | (childMeasuredState & utils.layout.MEASURED_STATE_MASK);
|
|
}
|
|
|
|
public static combineMeasuredStates(curState: number, newState): number {
|
|
return curState | newState;
|
|
}
|
|
|
|
public static layoutChild(parent: View, child: View, left: number, top: number, right: number, bottom: number): void {
|
|
if (!child || !child._isVisible) {
|
|
return;
|
|
}
|
|
|
|
var density = utils.layout.getDisplayDensity();
|
|
let lp: CommonLayoutParams = child.style._getValue(nativeLayoutParamsProperty);
|
|
|
|
var childTop: number;
|
|
var childLeft: number;
|
|
|
|
var childWidth = child.getMeasuredWidth();
|
|
var childHeight = child.getMeasuredHeight();
|
|
|
|
var vAlignment: string;
|
|
if (lp.height >= 0 && lp.verticalAlignment === enums.VerticalAlignment.stretch) {
|
|
vAlignment = enums.VerticalAlignment.center;
|
|
}
|
|
else {
|
|
vAlignment = lp.verticalAlignment;
|
|
}
|
|
|
|
let marginTop = lp.topMargin;
|
|
let marginBottom = lp.bottomMargin;
|
|
let marginLeft = lp.leftMargin;
|
|
let marginRight = lp.rightMargin;
|
|
|
|
switch (vAlignment) {
|
|
case enums.VerticalAlignment.top:
|
|
childTop = top + marginTop * density;
|
|
break;
|
|
|
|
case enums.VerticalAlignment.center:
|
|
case enums.VerticalAlignment.middle:
|
|
childTop = top + (bottom - top - childHeight + (marginTop - marginBottom) * density) / 2;
|
|
break;
|
|
|
|
case enums.VerticalAlignment.bottom:
|
|
childTop = bottom - childHeight - (marginBottom * density);
|
|
break;
|
|
|
|
case enums.VerticalAlignment.stretch:
|
|
default:
|
|
childTop = top + marginTop * density;
|
|
childHeight = bottom - top - (marginTop + marginBottom) * density;
|
|
break;
|
|
}
|
|
|
|
var hAlignment: string;
|
|
if (lp.width >= 0 && lp.horizontalAlignment === enums.HorizontalAlignment.stretch) {
|
|
hAlignment = enums.HorizontalAlignment.center;
|
|
}
|
|
else {
|
|
hAlignment = lp.horizontalAlignment;
|
|
}
|
|
|
|
switch (hAlignment) {
|
|
case enums.HorizontalAlignment.left:
|
|
childLeft = left + marginLeft * density;
|
|
break;
|
|
|
|
case enums.HorizontalAlignment.center:
|
|
childLeft = left + (right - left - childWidth + (marginLeft - marginRight) * density) / 2;
|
|
break;
|
|
|
|
case enums.HorizontalAlignment.right:
|
|
childLeft = right - childWidth - (marginRight * density);
|
|
break;
|
|
|
|
case enums.HorizontalAlignment.stretch:
|
|
default:
|
|
childLeft = left + marginLeft * density;
|
|
childWidth = right - left - (marginLeft + marginRight) * density;
|
|
break;
|
|
}
|
|
|
|
var childRight = Math.round(childLeft + childWidth);
|
|
var childBottom = Math.round(childTop + childHeight);
|
|
childLeft = Math.round(childLeft);
|
|
childTop = Math.round(childTop);
|
|
|
|
if (trace.enabled) {
|
|
trace.write(child.parent + " :layoutChild: " + child + " " + childLeft + ", " + childTop + ", " + childRight + ", " + childBottom, trace.categories.Layout);
|
|
}
|
|
|
|
child.layout(childLeft, childTop, childRight, childBottom);
|
|
}
|
|
|
|
public static measureChild(parent: View, child: View, widthMeasureSpec: number, heightMeasureSpec: number): { measuredWidth: number; measuredHeight: number } {
|
|
var measureWidth = 0;
|
|
var measureHeight = 0;
|
|
|
|
if (child && child._isVisible) {
|
|
var width = utils.layout.getMeasureSpecSize(widthMeasureSpec);
|
|
var widthMode = utils.layout.getMeasureSpecMode(widthMeasureSpec);
|
|
|
|
var height = utils.layout.getMeasureSpecSize(heightMeasureSpec);
|
|
var heightMode = utils.layout.getMeasureSpecMode(heightMeasureSpec);
|
|
|
|
var childWidthMeasureSpec = View.getMeasureSpec(child, width, widthMode, true);
|
|
var childHeightMeasureSpec = View.getMeasureSpec(child, height, heightMode, false);
|
|
|
|
if (trace.enabled) {
|
|
trace.write(child.parent + " :measureChild: " + child + " " + utils.layout.measureSpecToString(childWidthMeasureSpec) + ", " + utils.layout.measureSpecToString(childHeightMeasureSpec), trace.categories.Layout);
|
|
}
|
|
|
|
child.measure(childWidthMeasureSpec, childHeightMeasureSpec);
|
|
measureWidth = child.getMeasuredWidth();
|
|
measureHeight = child.getMeasuredHeight();
|
|
|
|
var density = utils.layout.getDisplayDensity();
|
|
let lp: CommonLayoutParams = child.style._getValue(style.nativeLayoutParamsProperty);
|
|
|
|
// Convert to pixels.
|
|
measureWidth = Math.round(measureWidth + (lp.leftMargin + lp.rightMargin) * density);
|
|
measureHeight = Math.round(measureHeight + (lp.topMargin + lp.bottomMargin) * density);
|
|
}
|
|
|
|
return { measuredWidth: measureWidth, measuredHeight: measureHeight };
|
|
}
|
|
|
|
private static getMeasureSpec(view: View, parentLength: number, parentSpecMode: number, horizontal: boolean): number {
|
|
|
|
let lp: CommonLayoutParams = view.style._getValue(style.nativeLayoutParamsProperty);
|
|
|
|
var density = utils.layout.getDisplayDensity();
|
|
var margins = horizontal ? lp.leftMargin + lp.rightMargin : lp.topMargin + lp.bottomMargin;
|
|
margins = Math.round(margins * density);
|
|
|
|
var resultSize = 0;
|
|
var resultMode = 0;
|
|
|
|
var measureLength = Math.max(0, parentLength - margins);
|
|
|
|
// Convert to pixels.
|
|
var childLength = Math.round((horizontal ? lp.width : lp.height) * density);
|
|
|
|
// We want a specific size... let be it.
|
|
if (childLength >= 0) {
|
|
if (parentSpecMode !== utils.layout.UNSPECIFIED) {
|
|
resultSize = Math.min(parentLength, childLength);
|
|
}
|
|
else {
|
|
resultSize = childLength;
|
|
}
|
|
|
|
resultMode = utils.layout.EXACTLY;
|
|
}
|
|
else {
|
|
switch (parentSpecMode) {
|
|
// Parent has imposed an exact size on us
|
|
case utils.layout.EXACTLY:
|
|
resultSize = measureLength;
|
|
var stretched = horizontal ? lp.horizontalAlignment === enums.HorizontalAlignment.stretch : lp.verticalAlignment === enums.VerticalAlignment.stretch;
|
|
|
|
// if stretched - nativeView wants to be our size. So be it.
|
|
// else - nativeView wants to determine its own size. It can't be bigger than us.
|
|
resultMode = stretched ? utils.layout.EXACTLY : utils.layout.AT_MOST;
|
|
break;
|
|
|
|
// Parent has imposed a maximum size on us
|
|
case utils.layout.AT_MOST:
|
|
resultSize = measureLength;
|
|
resultMode = utils.layout.AT_MOST;
|
|
break;
|
|
|
|
case utils.layout.UNSPECIFIED:
|
|
// Equivalent to measure with Infinity.
|
|
resultSize = 0;
|
|
resultMode = utils.layout.UNSPECIFIED;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return utils.layout.makeMeasureSpec(resultSize, resultMode);
|
|
}
|
|
|
|
_setCurrentMeasureSpecs(widthMeasureSpec: number, heightMeasureSpec: number): boolean {
|
|
var changed: boolean = this._oldWidthMeasureSpec !== widthMeasureSpec || this._oldHeightMeasureSpec !== heightMeasureSpec;
|
|
this._oldWidthMeasureSpec = widthMeasureSpec;
|
|
this._oldHeightMeasureSpec = heightMeasureSpec;
|
|
return changed;
|
|
}
|
|
|
|
protected static adjustChildLayoutParams(view: View, widthMeasureSpec: number, heightMeasureSpec: number): void {
|
|
if(!view) {
|
|
return;
|
|
}
|
|
|
|
let availableWidth = utils.layout.getMeasureSpecSize(widthMeasureSpec);
|
|
let widthSpec = utils.layout.getMeasureSpecMode(widthMeasureSpec);
|
|
|
|
let availableHeight = utils.layout.getMeasureSpecSize(heightMeasureSpec);
|
|
let heightSpec = utils.layout.getMeasureSpecMode(heightMeasureSpec);
|
|
|
|
let lp: CommonLayoutParams = view.style._getValue(style.nativeLayoutParamsProperty);
|
|
|
|
if (widthSpec !== utils.layout.UNSPECIFIED) {
|
|
if (lp.widthPercent > 0) {
|
|
lp.width = Math.round(availableWidth * lp.widthPercent);
|
|
}
|
|
|
|
if (lp.leftMarginPercent > 0) {
|
|
lp.leftMargin = Math.round(availableWidth * lp.leftMarginPercent);
|
|
}
|
|
|
|
if (lp.rightMarginPercent > 0) {
|
|
lp.rightMargin = Math.round(availableWidth * lp.rightMarginPercent);
|
|
}
|
|
}
|
|
|
|
if (heightSpec !== utils.layout.UNSPECIFIED) {
|
|
if (lp.heightPercent > 0) {
|
|
lp.height = Math.round(availableHeight * lp.heightPercent);
|
|
}
|
|
|
|
if (lp.topMarginPercent > 0) {
|
|
lp.topMargin = Math.round(availableHeight * lp.topMarginPercent);
|
|
}
|
|
|
|
if (lp.bottomMarginPercent > 0) {
|
|
lp.bottomMargin = Math.round(availableHeight * lp.bottomMarginPercent);
|
|
}
|
|
}
|
|
}
|
|
|
|
protected static restoreChildOriginalParams(view: View): void {
|
|
if(!view) {
|
|
return;
|
|
}
|
|
let lp: CommonLayoutParams = view.style._getValue(style.nativeLayoutParamsProperty);
|
|
|
|
if (lp.widthPercent > 0) {
|
|
lp.width = -1;
|
|
}
|
|
|
|
if (lp.heightPercent > 0) {
|
|
lp.height = -1;
|
|
}
|
|
if (lp.leftMarginPercent > 0) {
|
|
lp.leftMargin = 0;
|
|
}
|
|
if (lp.topMarginPercent > 0) {
|
|
lp.topMargin = 0;
|
|
}
|
|
if (lp.rightMarginPercent > 0) {
|
|
lp.rightMargin = 0;
|
|
}
|
|
if (lp.bottomMarginPercent > 0) {
|
|
lp.bottomMargin = 0;
|
|
}
|
|
}
|
|
|
|
_getCurrentLayoutBounds(): { left: number; top: number; right: number; bottom: number } {
|
|
return { left: this._oldLeft, top: this._oldTop, right: this._oldRight, bottom: this._oldBottom }
|
|
}
|
|
|
|
/**
|
|
* Returns two booleans - the first if "boundsChanged" the second is "sizeChanged".
|
|
*/
|
|
_setCurrentLayoutBounds(left: number, top: number, right: number, bottom: number): { boundsChanged: boolean, sizeChanged: boolean } {
|
|
this._isLayoutValid = true;
|
|
var boundsChanged: boolean = this._oldLeft !== left || this._oldTop !== top || this._oldRight !== right || this._oldBottom !== bottom;
|
|
var sizeChanged: boolean = (this._oldRight - this._oldLeft !== right - left) || (this._oldBottom - this._oldTop !== bottom - top);
|
|
this._oldLeft = left;
|
|
this._oldTop = top;
|
|
this._oldRight = right;
|
|
this._oldBottom = bottom;
|
|
return { boundsChanged, sizeChanged };
|
|
}
|
|
|
|
private _applyStyleFromScope() {
|
|
var rootPage = this.page;
|
|
if (!rootPage || !rootPage.isLoaded) {
|
|
return;
|
|
}
|
|
var scope: styleScope.StyleScope = (<any>rootPage)._getStyleScope();
|
|
scope.applySelectors(this);
|
|
}
|
|
|
|
private _applyInlineStyle(inlineStyle) {
|
|
if (types.isString(inlineStyle)) {
|
|
try {
|
|
this.style._beginUpdate();
|
|
styleScope.applyInlineSyle(this, <string>inlineStyle);
|
|
} finally {
|
|
this.style._endUpdate();
|
|
}
|
|
}
|
|
}
|
|
|
|
// TODO: We need to implement some kind of build step that includes these members only when building for Android
|
|
//@android
|
|
public _context: android.content.Context;
|
|
|
|
public _onAttached(context: android.content.Context) {
|
|
//
|
|
}
|
|
|
|
public _onDetached(force?: boolean) {
|
|
//
|
|
}
|
|
|
|
public _createUI() {
|
|
//
|
|
}
|
|
|
|
public _onContextChanged() {
|
|
//
|
|
}
|
|
//@endandroid
|
|
|
|
// TODO: We need to implement some kind of build step that includes these members only when building for iOS
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//@endios
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get _childrenCount(): number {
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return 0;
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}
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public _eachChildView(callback: (view: View) => boolean) {
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//
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}
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_childIndexToNativeChildIndex(index?: number): number {
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return index;
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}
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_getNativeViewsCount(): number {
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return this._isAddedToNativeVisualTree ? 1 : 0;
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}
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_eachLayoutView(callback: (View) => void): void {
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return callback(this);
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}
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_addToSuperview(superview: any, index?: number): boolean {
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// IOS specific
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return false;
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}
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_removeFromSuperview(): void {
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// IOS specific
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}
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/**
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* Core logic for adding a child view to this instance. Used by the framework to handle lifecycle events more centralized. Do not outside the UI Stack implementation.
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* // TODO: Think whether we need the base Layout routine.
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*/
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public _addView(view: View, atIndex?: number) {
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if (trace.enabled) {
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trace.write(`${this}._addView(${view}, ${atIndex})`, trace.categories.ViewHierarchy);
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}
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if (!view) {
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throw new Error("Expecting a valid View instance.");
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}
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if(!(view instanceof View))
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{
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throw new Error(view + " is not a valid View instance.");
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}
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if (view._parent) {
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throw new Error("View already has a parent. View: " + view + " Parent: " + view._parent);
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}
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view._parent = this;
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this._addViewCore(view, atIndex);
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view._parentChanged(null);
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}
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/**
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* Method is intended to be overridden by inheritors and used as "protected"
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*/
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public _addViewCore(view: View, atIndex?: number) {
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this._propagateInheritableProperties(view);
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if (!view._isAddedToNativeVisualTree) {
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let nativeIndex = this._childIndexToNativeChildIndex(atIndex);
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view._isAddedToNativeVisualTree = this._addViewToNativeVisualTree(view, nativeIndex);
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}
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// TODO: Discuss this.
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if (this._isLoaded) {
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view.onLoaded();
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}
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}
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public _propagateInheritableProperties(view: View) {
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view._inheritProperties(this);
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view.style._inheritStyleProperties(this);
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}
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public _inheritProperties(parentView: View) {
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parentView._eachSetProperty((property) => {
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if (!(property instanceof styling.Property) && property.inheritable) {
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let baseValue = parentView._getValue(property);
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this._setValue(property, baseValue, ValueSource.Inherited);
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}
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return true;
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});
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}
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/**
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* Core logic for removing a child view from this instance. Used by the framework to handle lifecycle events more centralized. Do not outside the UI Stack implementation.
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*/
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public _removeView(view: View) {
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if (trace.enabled) {
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trace.write(`${this}._removeView(${view})`, trace.categories.ViewHierarchy);
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}
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if (view._parent !== this) {
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throw new Error("View not added to this instance. View: " + view + " CurrentParent: " + view._parent + " ExpectedParent: " + this);
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}
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this._removeViewCore(view);
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view._parent = undefined;
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view._parentChanged(this);
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}
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/**
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* Method is intended to be overridden by inheritors and used as "protected"
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*/
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public _removeViewCore(view: View) {
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// Remove the view from the native visual scene first
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this._removeViewFromNativeVisualTree(view);
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// TODO: Discuss this.
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if (view.isLoaded) {
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view.onUnloaded();
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}
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view.unsetInheritedProperties();
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}
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public unsetInheritedProperties(): void {
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this._setValue(ProxyObject.bindingContextProperty, undefined, ValueSource.Inherited);
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this._eachSetProperty((property) => {
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if (!(property instanceof styling.Property) && property.inheritable) {
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this._resetValue(property, ValueSource.Inherited);
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}
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return true;
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});
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}
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public _parentChanged(oldParent: View): void {
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//Overridden
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}
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/**
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|
* Method is intended to be overridden by inheritors and used as "protected".
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*/
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public _addViewToNativeVisualTree(view: View, atIndex?: number): boolean {
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if (view._isAddedToNativeVisualTree) {
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throw new Error("Child already added to the native visual tree.");
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}
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return true;
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}
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/**
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* Method is intended to be overridden by inheritors and used as "protected"
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*/
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public _removeViewFromNativeVisualTree(view: View) {
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view._isAddedToNativeVisualTree = false;
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}
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public _syncNativeProperties() {
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super._syncNativeProperties();
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// loop all style properties and call the _applyStyleProperty method
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// TODO: Potential performance bottle-neck
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this.style._syncNativeProperties();
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}
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public _goToVisualState(state: string) {
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if (trace.enabled) {
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trace.write(this + " going to state: " + state, trace.categories.Style);
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}
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if (state === this._visualState) {
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return;
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}
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this.deletePseudoClass(this._visualState);
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this._visualState = state;
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this.addPseudoClass(state);
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}
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public _applyXmlAttribute(attribute, value): boolean {
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if (attribute === "style") {
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this._applyInlineStyle(value);
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return true;
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}
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return false;
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}
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public setInlineStyle(style: string): void {
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if (!types.isString(style)) {
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throw new Error("Parameter should be valid CSS string!");
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}
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this._applyInlineStyle(style);
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}
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public _updateLayout() {
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// needed for iOS.
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}
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get _nativeView(): any {
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return undefined;
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}
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get _isVisible(): boolean {
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|
return this._isVisibleCache;
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}
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public _shouldApplyStyleHandlers() {
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// If we have native view we are ready to apply style handelr;
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return !!this._nativeView;
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}
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public focus(): boolean {
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return undefined;
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}
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public getLocationInWindow(): definition.Point {
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|
return undefined;
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}
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public getLocationOnScreen(): definition.Point {
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return undefined;
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}
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public getLocationRelativeTo(otherView: definition.View): definition.Point {
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return undefined;
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}
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public getActualSize(): definition.Size {
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var currentBounds = this._getCurrentLayoutBounds();
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if (!currentBounds) {
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return undefined;
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}
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return {
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width: utils.layout.toDeviceIndependentPixels(currentBounds.right - currentBounds.left),
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height: utils.layout.toDeviceIndependentPixels(currentBounds.bottom - currentBounds.top),
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}
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}
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public animate(animation: any): animModule.AnimationPromise {
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|
return this.createAnimation(animation).play();
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}
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|
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public createAnimation(animation: any): any {
|
|
let animationModule: typeof animModule = require("ui/animation");
|
|
let that = this;
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animation.target = that;
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|
return new animationModule.Animation([animation]);
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}
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|
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public _registerAnimation(animation: keyframeAnimationModule.KeyframeAnimation) {
|
|
if (this._registeredAnimations === undefined) {
|
|
this._registeredAnimations = new Array<keyframeAnimationModule.KeyframeAnimation>();
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}
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this._registeredAnimations.push(animation);
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}
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|
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public _unregisterAnimation(animation: keyframeAnimationModule.KeyframeAnimation) {
|
|
if (this._registeredAnimations) {
|
|
let index = this._registeredAnimations.indexOf(animation);
|
|
if (index >= 0) {
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|
this._registeredAnimations.splice(index, 1);
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}
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}
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|
}
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|
|
public _unregisterAllAnimations() {
|
|
if (this._registeredAnimations) {
|
|
for (let animation of this._registeredAnimations) {
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animation.cancel();
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}
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}
|
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}
|
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|
|
public toString(): string {
|
|
var str = this.typeName;
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if (this.id) {
|
|
str += `<${this.id}>`;
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|
} else {
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|
str += `(${this._domId})`;
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}
|
|
var source = Source.get(this);
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if (source) {
|
|
str += `@${source};`;
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|
}
|
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|
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return str;
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}
|
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|
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public _setNativeViewFrame(nativeView: any, frame: any) {
|
|
//
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|
}
|
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|
|
public _onStylePropertyChanged(property: Property): void {
|
|
//
|
|
}
|
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|
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protected _canApplyNativeProperty(): boolean {
|
|
// Check for a valid _nativeView instance
|
|
return !!this._nativeView;
|
|
}
|
|
|
|
private notifyPseudoClassChanged(pseudoClass: string): void {
|
|
this.notify({ eventName: ":" + pseudoClass, object: this });
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|
}
|
|
|
|
// TODO: Make sure the state is set to null and this is called on unloaded to clean up change listeners...
|
|
_onCssStateChange(previous: CssState, next: CssState): void {
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|
|
|
if (!this._invalidateCssHandler) {
|
|
this._invalidateCssHandler = () => {
|
|
if (this._invalidateCssHandlerSuspended) {
|
|
return;
|
|
}
|
|
this.applyCssState();
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|
};
|
|
}
|
|
|
|
try {
|
|
this._invalidateCssHandlerSuspended = true;
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|
|
|
if (next) {
|
|
next.changeMap.forEach((changes, view) => {
|
|
if (changes.attributes) {
|
|
changes.attributes.forEach(attribute => {
|
|
view.addEventListener(attribute + "Change", this._invalidateCssHandler)
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|
});
|
|
}
|
|
if (changes.pseudoClasses) {
|
|
changes.pseudoClasses.forEach(pseudoClass => {
|
|
let eventName = ":" + pseudoClass;
|
|
view.addEventListener(":" + pseudoClass, this._invalidateCssHandler);
|
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if (view[eventName]) {
|
|
view[eventName](+1);
|
|
}
|
|
});
|
|
}
|
|
});
|
|
}
|
|
|
|
if (previous) {
|
|
previous.changeMap.forEach((changes, view) => {
|
|
if (changes.attributes) {
|
|
changes.attributes.forEach(attribute => {
|
|
view.removeEventListener("onPropertyChanged:" + attribute, this._invalidateCssHandler)
|
|
});
|
|
}
|
|
if (changes.pseudoClasses) {
|
|
changes.pseudoClasses.forEach(pseudoClass => {
|
|
let eventName = ":" + pseudoClass;
|
|
view.removeEventListener(eventName, this._invalidateCssHandler)
|
|
if (view[eventName]) {
|
|
view[eventName](-1);
|
|
}
|
|
});
|
|
}
|
|
});
|
|
}
|
|
|
|
} finally {
|
|
this._invalidateCssHandlerSuspended = false;
|
|
}
|
|
|
|
this.applyCssState();
|
|
}
|
|
|
|
/**
|
|
* Notify that some attributes or pseudo classes that may affect the current CssState had changed.
|
|
*/
|
|
private _invalidateCssHandler;
|
|
private _invalidateCssHandlerSuspended: boolean;
|
|
|
|
private applyCssState(): void {
|
|
if (!this._cssState) {
|
|
return;
|
|
}
|
|
|
|
this.style._beginUpdate();
|
|
this._cssState.apply();
|
|
this.style._endUpdate();
|
|
}
|
|
} |