mirror of
https://github.com/NativeScript/NativeScript.git
synced 2025-08-15 19:26:42 +08:00
1109 lines
35 KiB
TypeScript
1109 lines
35 KiB
TypeScript
import types = require("utils/types");
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import definition = require("ui/core/view");
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import proxy = require("ui/core/proxy");
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import style = require("../styling/style");
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import styling = require("ui/styling");
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import visualStateConstants = require("ui/styling/visual-state-constants");
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import trace = require("trace");
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import dependencyObservable = require("ui/core/dependency-observable");
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import gestures = require("ui/gestures");
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import bindable = require("ui/core/bindable");
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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 animationModule = require("ui/animation");
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import observable = require("data/observable");
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import {registerSpecialProperty} from "ui/builder/special-properties";
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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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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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var viewIdCounter = 0;
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function onCssClassPropertyChanged(data: dependencyObservable.PropertyChangeData) {
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var view = <View>data.object;
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if (types.isString(data.newValue)) {
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view._cssClasses = (<string>data.newValue).split(" ");
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}
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else {
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view._cssClasses.length = 0;
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}
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}
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var idProperty = new dependencyObservable.Property(
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"id",
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"View",
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new proxy.PropertyMetadata(undefined, dependencyObservable.PropertyMetadataSettings.AffectsStyle)
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);
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var cssClassProperty = new dependencyObservable.Property(
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"cssClass",
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"View",
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new proxy.PropertyMetadata(undefined, dependencyObservable.PropertyMetadataSettings.AffectsStyle, onCssClassPropertyChanged)
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);
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var classNameProperty = new dependencyObservable.Property(
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"className",
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"View",
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new proxy.PropertyMetadata(undefined, dependencyObservable.PropertyMetadataSettings.AffectsStyle, onCssClassPropertyChanged)
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);
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var translateXProperty = new dependencyObservable.Property(
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"translateX",
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"View",
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new proxy.PropertyMetadata(0)
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);
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var translateYProperty = new dependencyObservable.Property(
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"translateY",
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"View",
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new proxy.PropertyMetadata(0)
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);
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var scaleXProperty = new dependencyObservable.Property(
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"scaleX",
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"View",
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new proxy.PropertyMetadata(1)
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);
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var scaleYProperty = new dependencyObservable.Property(
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"scaleY",
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"View",
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new proxy.PropertyMetadata(1)
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);
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var rotateProperty = new dependencyObservable.Property(
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"rotate",
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"View",
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new proxy.PropertyMetadata(0)
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);
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var isEnabledProperty = new dependencyObservable.Property(
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"isEnabled",
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"View",
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new proxy.PropertyMetadata(true)
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);
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var isUserInteractionEnabledProperty = new dependencyObservable.Property(
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"isUserInteractionEnabled",
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"View",
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new proxy.PropertyMetadata(true)
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);
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export class View extends proxy.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 idProperty = idProperty;
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public static cssClassProperty = cssClassProperty;
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public static classNameProperty = classNameProperty;
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public static translateXProperty = translateXProperty;
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public static translateYProperty = translateYProperty;
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public static scaleXProperty = scaleXProperty;
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public static scaleYProperty = scaleYProperty;
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public static rotateProperty = rotateProperty;
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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 _requestedVisualState: string;
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private _isLoaded: boolean;
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private _isLayoutValid: boolean = false;
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public _domId: number;
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public _isAddedToNativeVisualTree = false;
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public _cssClasses: Array<string> = [];
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public _gestureObservers = {};
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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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private _updatingInheritedProperties: boolean;
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public _options: definition.Options;
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constructor(options?: definition.Options) {
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super();
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this._options = options;
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this._style = new style.Style(this);
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this._domId = viewIdCounter++;
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this._visualState = visualStateConstants.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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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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getViewById<T extends View>(id: string): T {
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return <T>getViewById(this, id);
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}
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// START Style property shortcuts
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get borderRadius(): number {
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return this.style.borderRadius;
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}
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set borderRadius(value: number) {
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this.style.borderRadius = value;
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}
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get borderWidth(): number {
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return this.style.borderWidth;
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}
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set borderWidth(value: number) {
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this.style.borderWidth = value;
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}
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get borderColor(): color.Color {
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return this.style.borderColor;
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}
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set borderColor(value: color.Color) {
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this.style.borderColor = 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._getValue(View.translateXProperty);
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}
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set translateX(value: number) {
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this._setValue(View.translateXProperty, value);
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}
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get translateY(): number {
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return this._getValue(View.translateYProperty);
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}
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set translateY(value: number) {
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this._setValue(View.translateYProperty, value);
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}
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get scaleX(): number {
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return this._getValue(View.scaleXProperty);
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}
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set scaleX(value: number) {
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this._setValue(View.scaleXProperty, value);
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}
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get scaleY(): number {
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return this._getValue(View.scaleYProperty);
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}
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set scaleY(value: number) {
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this._setValue(View.scaleYProperty, value);
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}
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get rotate(): number {
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return this._getValue(View.rotateProperty);
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}
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set rotate(value: number) {
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this._setValue(View.rotateProperty, 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;
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}
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return null;
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}
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get isUserInteractionEnabled(): boolean {
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return this._getValue(View.isUserInteractionEnabledProperty);
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}
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set isUserInteractionEnabled(value: boolean) {
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this._setValue(View.isUserInteractionEnabledProperty, value);
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}
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get id(): string {
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return this._getValue(View.idProperty);
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}
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set id(value: string) {
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this._setValue(View.idProperty, value);
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}
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get cssClass(): string {
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return this._getValue(View.cssClassProperty);
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}
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set cssClass(value: string) {
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this._setValue(View.cssClassProperty, value);
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}
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get className(): string {
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return this._getValue(View.cssClassProperty);
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}
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set className(value: string) {
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this._setValue(View.cssClassProperty, value);
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}
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get style(): style.Style {
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return this._style;
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}
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set style(value) {
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throw new Error("View.style property is read-only.");
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}
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get isLayoutValid(): boolean {
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return this._isLayoutValid;
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}
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set isLayoutValid(value: boolean) {
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throw new Error("isLayoutValid is read-only property.");
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}
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get visualState(): string {
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return this._visualState;
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}
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get cssType(): string {
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return this.typeName.toLowerCase();
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}
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get parent(): definition.View {
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return this._parent;
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}
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get isLoaded(): boolean {
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return this._isLoaded;
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}
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public onLoaded() {
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this._isLoaded = true;
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this._loadEachChildView();
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this._applyStyleFromScope();
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this._emit("loaded");
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}
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public _loadEachChildView() {
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if (this._childrenCount > 0) {
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// iterate all children and call onLoaded on them first
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var eachChild = function (child: View): boolean {
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child.onLoaded();
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return true;
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}
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this._eachChildView(eachChild);
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}
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}
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public onUnloaded() {
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this._unloadEachChildView();
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this._isLoaded = false;
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this._emit("unloaded");
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}
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public _unloadEachChildView() {
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if (this._childrenCount > 0) {
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// iterate all children and call onLoaded on them first
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var eachChild = function (child: View): boolean {
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child.onUnloaded();
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return true;
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}
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this._eachChildView(eachChild);
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}
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}
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|
public _onPropertyChanged(property: dependencyObservable.Property, oldValue: any, newValue: any) {
|
|
super._onPropertyChanged(property, oldValue, newValue);
|
|
|
|
if (this._childrenCount > 0) {
|
|
var shouldUpdateInheritableProps = ((property.metadata && property.metadata.inheritable) &&
|
|
!(property instanceof styling.Property));
|
|
var that = this;
|
|
if (shouldUpdateInheritableProps) {
|
|
var notifyEachChild = function (child: View) {
|
|
child._setValue(property, that._getValue(property), dependencyObservable.ValueSource.Inherited);
|
|
return true;
|
|
};
|
|
this._updatingInheritedProperties = true;
|
|
this._eachChildView(notifyEachChild);
|
|
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: dependencyObservable.PropertyMetadata) {
|
|
if (metadata.affectsLayout) {
|
|
this.requestLayout();
|
|
}
|
|
|
|
if (metadata.affectsStyle) {
|
|
this.style._resetCssValues();
|
|
this._applyStyleFromScope();
|
|
}
|
|
}
|
|
|
|
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 setMeasuredDimension(measuredWidth: number, measuredHeight: number): void {
|
|
this._measuredWidth = measuredWidth;
|
|
this._measuredHeight = measuredHeight;
|
|
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 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 layoutChild(parent: View, child: View, left: number, top: number, right: number, bottom: number): void {
|
|
|
|
if (!child || !child._isVisible) {
|
|
return;
|
|
}
|
|
|
|
var density = utils.layout.getDisplayDensity();
|
|
|
|
var childTop: number;
|
|
var childLeft: number;
|
|
|
|
var childWidth = child.getMeasuredWidth();
|
|
var childHeight = child.getMeasuredHeight();
|
|
|
|
var vAlignment: string;
|
|
if (!isNaN(child.height) && child.verticalAlignment === enums.VerticalAlignment.stretch) {
|
|
vAlignment = enums.VerticalAlignment.center;
|
|
}
|
|
else {
|
|
vAlignment = child.verticalAlignment;
|
|
}
|
|
|
|
switch (vAlignment) {
|
|
case enums.VerticalAlignment.top:
|
|
childTop = top + child.marginTop * density;
|
|
break;
|
|
|
|
case enums.VerticalAlignment.center || enums.VerticalAlignment.middle:
|
|
childTop = top + (bottom - top - childHeight + (child.marginTop - child.marginBottom) * density) / 2;
|
|
break;
|
|
|
|
case enums.VerticalAlignment.bottom:
|
|
childTop = bottom - childHeight - (child.marginBottom * density);
|
|
break;
|
|
|
|
case enums.VerticalAlignment.stretch:
|
|
default:
|
|
childTop = top + child.marginTop * density;
|
|
childHeight = bottom - top - (child.marginTop + child.marginBottom) * density;
|
|
break;
|
|
}
|
|
|
|
var hAlignment: string;
|
|
if (!isNaN(child.width) && child.horizontalAlignment === enums.HorizontalAlignment.stretch) {
|
|
hAlignment = enums.HorizontalAlignment.center;
|
|
}
|
|
else {
|
|
hAlignment = child.horizontalAlignment;
|
|
}
|
|
|
|
switch (hAlignment) {
|
|
case enums.HorizontalAlignment.left:
|
|
childLeft = left + child.marginLeft * density;
|
|
break;
|
|
|
|
case enums.HorizontalAlignment.center:
|
|
childLeft = left + (right - left - childWidth + (child.marginLeft - child.marginRight) * density) / 2;
|
|
break;
|
|
|
|
case enums.HorizontalAlignment.right:
|
|
childLeft = right - childWidth - child.marginRight * density;
|
|
break;
|
|
|
|
case enums.HorizontalAlignment.stretch:
|
|
default:
|
|
childLeft = left + child.marginLeft * density;
|
|
childWidth = right - left - (child.marginLeft + child.marginRight) * density;
|
|
break;
|
|
}
|
|
|
|
var childRight = Math.round(childLeft + childWidth);
|
|
var childBottom = Math.round(childTop + childHeight);
|
|
childLeft = Math.round(childLeft);
|
|
childTop = Math.round(childTop);
|
|
|
|
trace.write(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);
|
|
trace.write(parent + " :measureChild: " + child + " " + utils.layout.getMode(widthMode) + " " + width + ", " + utils.layout.getMode(heightMode) + " " + height, trace.categories.Layout);
|
|
|
|
var childWidthMeasureSpec = View.getMeasureSpec(child, width, widthMode, true);
|
|
var childHeightMeasureSpec = View.getMeasureSpec(child, height, heightMode, false);
|
|
|
|
child.measure(childWidthMeasureSpec, childHeightMeasureSpec);
|
|
measureWidth = child.getMeasuredWidth();
|
|
measureHeight = child.getMeasuredHeight();
|
|
|
|
var density = utils.layout.getDisplayDensity();
|
|
// Convert to pixels.
|
|
measureWidth = Math.round(measureWidth + (child.marginLeft + child.marginRight) * density);
|
|
measureHeight = Math.round(measureHeight + (child.marginTop + child.marginBottom) * density);
|
|
}
|
|
|
|
return { measuredWidth: measureWidth, measuredHeight: measureHeight };
|
|
}
|
|
|
|
private static getMeasureSpec(view: View, parentLength: number, parentSpecMode: number, horizontal: boolean): number {
|
|
|
|
var density = utils.layout.getDisplayDensity();
|
|
var margins = horizontal ? view.marginLeft + view.marginRight : view.marginTop + view.marginBottom;
|
|
margins = Math.floor(margins * density);
|
|
|
|
var resultSize = 0;
|
|
var resultMode = 0;
|
|
|
|
var measureLength = Math.max(0, parentLength - margins);
|
|
|
|
// Convert to pixels.
|
|
var childLength = Math.floor((horizontal ? view.width : view.height) * density);
|
|
|
|
// We want a specific size... let be it.
|
|
if (!isNaN(childLength)) {
|
|
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 ? view.horizontalAlignment === enums.HorizontalAlignment.stretch : view.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;
|
|
}
|
|
|
|
_getCurrentLayoutBounds(): { left: number; top: number; right: number; bottom: number } {
|
|
return { left: this._oldLeft, top: this._oldTop, right: this._oldRight, bottom: this._oldBottom }
|
|
}
|
|
|
|
_setCurrentLayoutBounds(left: number, top: number, right: number, bottom: number): boolean {
|
|
this._isLayoutValid = true;
|
|
var changed: boolean = this._oldLeft !== left || this._oldTop !== top || this._oldRight !== right || this._oldBottom !== bottom;
|
|
this._oldLeft = left;
|
|
this._oldTop = top;
|
|
this._oldRight = right;
|
|
this._oldBottom = bottom;
|
|
return changed;
|
|
}
|
|
|
|
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
|
|
|
|
//@endios
|
|
get _childrenCount(): number {
|
|
return 0;
|
|
}
|
|
|
|
public _eachChildView(callback: (view: View) => boolean) {
|
|
//
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
* // TODO: Think whether we need the base Layout routine.
|
|
*/
|
|
public _addView(view: View, atIndex?: number) {
|
|
if (!view) {
|
|
throw new Error("Expecting a valid View instance.");
|
|
}
|
|
|
|
if (view._parent) {
|
|
throw new Error("View already has a parent. View: " + view + " Parent: " + view._parent);
|
|
}
|
|
|
|
view._parent = this;
|
|
this._addViewCore(view, atIndex);
|
|
|
|
trace.write("called _addView on view " + this._domId + " for a child " + view._domId, trace.categories.ViewHierarchy);
|
|
}
|
|
|
|
/**
|
|
* Method is intended to be overridden by inheritors and used as "protected"
|
|
*/
|
|
public _addViewCore(view: View, atIndex?: number) {
|
|
this._propagateInheritableProperties(view);
|
|
|
|
view.style._inheritStyleProperties();
|
|
|
|
if (!view._isAddedToNativeVisualTree) {
|
|
view._isAddedToNativeVisualTree = this._addViewToNativeVisualTree(view, atIndex);
|
|
}
|
|
|
|
// TODO: Discuss this.
|
|
if (this._isLoaded) {
|
|
view.onLoaded();
|
|
}
|
|
}
|
|
|
|
public _propagateInheritableProperties(view: View) {
|
|
view._inheritProperties(this);
|
|
}
|
|
|
|
public _inheritProperties(parentView: View) {
|
|
var that = this;
|
|
var inheritablePropertySetCallback = function (property: dependencyObservable.Property) {
|
|
if (property instanceof styling.Property) {
|
|
return true;
|
|
}
|
|
if (property.metadata && property.metadata.inheritable) {
|
|
var baseValue = parentView._getValue(property);
|
|
if (baseValue) {
|
|
that._setValue(property, baseValue, dependencyObservable.ValueSource.Inherited);
|
|
}
|
|
}
|
|
return true;
|
|
};
|
|
|
|
parentView._eachSetProperty(inheritablePropertySetCallback);
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
public _removeView(view: View) {
|
|
if (view._parent !== this) {
|
|
throw new Error("View not added to this instance. View: " + view + " CurrentParent: " + view._parent + " ExpectedParent: " + this);
|
|
}
|
|
|
|
this._removeViewCore(view);
|
|
view._parent = undefined;
|
|
|
|
trace.write("called _removeView on view " + this._domId + " for a child " + view._domId, trace.categories.ViewHierarchy);
|
|
}
|
|
|
|
/**
|
|
* Method is intended to be overridden by inheritors and used as "protected"
|
|
*/
|
|
public _removeViewCore(view: View) {
|
|
// Remove the view from the native visual scene first
|
|
this._removeViewFromNativeVisualTree(view);
|
|
|
|
// TODO: Discuss this.
|
|
if (view.isLoaded) {
|
|
view.onUnloaded();
|
|
}
|
|
|
|
view._setValue(bindable.Bindable.bindingContextProperty, undefined, dependencyObservable.ValueSource.Inherited);
|
|
var inheritablePropertiesSetCallback = function (property: dependencyObservable.Property) {
|
|
if (property instanceof styling.Property) {
|
|
return true;
|
|
}
|
|
if (property.metadata && property.metadata.inheritable) {
|
|
view._resetValue(property, dependencyObservable.ValueSource.Inherited);
|
|
}
|
|
return true;
|
|
}
|
|
view._eachSetProperty(inheritablePropertiesSetCallback);
|
|
}
|
|
|
|
/**
|
|
* Method is intended to be overridden by inheritors and used as "protected".
|
|
*/
|
|
public _addViewToNativeVisualTree(view: View, atIndex?: number): boolean {
|
|
if (view._isAddedToNativeVisualTree) {
|
|
throw new Error("Child already added to the native visual tree.");
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Method is intended to be overridden by inheritors and used as "protected"
|
|
*/
|
|
public _removeViewFromNativeVisualTree(view: View) {
|
|
view._isAddedToNativeVisualTree = false;
|
|
}
|
|
|
|
public _syncNativeProperties() {
|
|
super._syncNativeProperties();
|
|
|
|
// loop all style properties and call the _applyStyleProperty method
|
|
// TODO: Potential performance bottle-neck
|
|
this.style._syncNativeProperties();
|
|
}
|
|
|
|
public _goToVisualState(state: string) {
|
|
trace.write(this + " going to state: " + state, trace.categories.Style);
|
|
if (state === this._visualState || this._requestedVisualState === state) {
|
|
return;
|
|
}
|
|
// we use lazy require to prevent cyclic dependencies issues
|
|
var vsm = require("ui/styling/visual-state");
|
|
this._visualState = vsm.goToState(this, state);
|
|
|
|
// TODO: What state should we set here - the requested or the actual one?
|
|
this._requestedVisualState = state;
|
|
}
|
|
|
|
public _applyXmlAttribute(attribute, value): boolean {
|
|
if (attribute === "style") {
|
|
this._applyInlineStyle(value);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public setInlineStyle(style: string): void {
|
|
if (!types.isString(style)) {
|
|
throw new Error("Parameter should be valid CSS string!");
|
|
}
|
|
|
|
this._applyInlineStyle(style);
|
|
}
|
|
|
|
public _updateLayout() {
|
|
// needed for iOS.
|
|
}
|
|
|
|
get _nativeView(): any {
|
|
return undefined;
|
|
}
|
|
|
|
get _isVisible(): boolean {
|
|
return this._isVisibleCache;
|
|
}
|
|
|
|
public focus(): boolean {
|
|
return undefined;
|
|
}
|
|
|
|
public animate(animation: animationModule.AnimationDefinition): Promise<void> {
|
|
return this.createAnimation(animation).play();
|
|
}
|
|
|
|
public createAnimation(animation: animationModule.AnimationDefinition): animationModule.Animation {
|
|
var that = this;
|
|
animation.target = that;
|
|
return new animationModule.Animation([animation]);
|
|
}
|
|
}
|