mirror of
https://github.com/NativeScript/NativeScript.git
synced 2025-08-16 11:42:04 +08:00
449 lines
17 KiB
TypeScript
449 lines
17 KiB
TypeScript
import pageCommon = require("./page-common");
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import definition = require("ui/page");
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import {View} from "ui/core/view";
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import trace = require("trace");
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import uiUtils = require("ui/utils");
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import utils = require("utils/utils");
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import {device} from "platform";
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import {DeviceType} from "ui/enums";
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global.moduleMerge(pageCommon, exports);
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var ENTRY = "_entry";
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var DELEGATE = "_delegate";
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function isBackNavigation(frame: any, entry): boolean {
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if (!frame) {
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return false;
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}
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if (frame._navigationQueue.length === 0) {
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return true;
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}
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else {
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var navigationQueue = frame._navigationQueue;
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for (var i = 0; i < navigationQueue.length; i++) {
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if (navigationQueue[i].entry === entry) {
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return navigationQueue[i].isBackNavigation;
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}
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}
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}
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return false;
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}
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class UIViewControllerImpl extends UIViewController {
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private _owner: WeakRef<Page>;
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public static initWithOwner(owner: WeakRef<Page>): UIViewControllerImpl {
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let controller = <UIViewControllerImpl>UIViewControllerImpl.new();
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controller._owner = owner;
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controller.automaticallyAdjustsScrollViewInsets = false;
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return controller;
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}
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public viewDidLayoutSubviews() {
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let owner = this._owner.get();
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if (!owner) {
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return;
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}
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trace.write(owner + " viewDidLayoutSubviews, isLoaded = " + owner.isLoaded, trace.categories.ViewHierarchy);
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if (!owner.isLoaded) {
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return;
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}
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if (owner._modalParent) {
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let isTablet = device.deviceType === DeviceType.Tablet;
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let isFullScreen = !owner._UIModalPresentationFormSheet || !isTablet;
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let frame = isFullScreen ? UIScreen.mainScreen().bounds : this.view.frame;
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let size = frame.size;
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let width = size.width;
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let height = size.height;
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let mode: number = utils.layout.EXACTLY;
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let superViewRotationRadians;
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if (this.view.superview) {
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let transform = this.view.superview.transform;
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superViewRotationRadians = atan2f(transform.b, transform.a);
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}
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if (utils.ios.MajorVersion < 8 && utils.ios.isLandscape() && !superViewRotationRadians) {
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// in iOS 7 when in landscape we switch width with height because on device they don't change even when rotated.
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width = size.height;
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height = size.width;
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}
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let bottom = height;
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let statusBarHeight = uiUtils.ios.getStatusBarHeight();
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let statusBarVisible = !UIApplication.sharedApplication().statusBarHidden;
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let backgroundSpanUnderStatusBar = owner.backgroundSpanUnderStatusBar;
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if (statusBarVisible && !backgroundSpanUnderStatusBar) {
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height -= statusBarHeight;
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}
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let widthSpec = utils.layout.makeMeasureSpec(width, mode);
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let heightSpec = utils.layout.makeMeasureSpec(height, mode);
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View.measureChild(null, owner, widthSpec, heightSpec);
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let top = ((backgroundSpanUnderStatusBar && isFullScreen) || utils.ios.MajorVersion < 8 || !isFullScreen) ? 0 : statusBarHeight;
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View.layoutChild(null, owner, 0, top, width, bottom);
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if (utils.ios.MajorVersion < 8) {
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if (!backgroundSpanUnderStatusBar && (!isTablet || isFullScreen)) {
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if (utils.ios.isLandscape() && !superViewRotationRadians) {
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this.view.center = CGPointMake(this.view.center.x - statusBarHeight, this.view.center.y);
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}
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else {
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this.view.center = CGPointMake(this.view.center.x, this.view.center.y + statusBarHeight);
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}
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}
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}
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trace.write(owner + ", native frame = " + NSStringFromCGRect(this.view.frame), trace.categories.Layout);
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}
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else {
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owner._updateLayout();
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}
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}
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public viewWillAppear(animated: boolean): void {
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let page = this._owner.get();
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trace.write(page + " viewWillAppear", trace.categories.Navigation);
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if (!page) {
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return;
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}
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let frame = this.navigationController ? (<any>this.navigationController).owner : null;
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let newEntry = this[ENTRY];
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// Don't raise event if currentPage was showing modal page.
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if (!page.modal && newEntry && (!frame || frame.currentPage !== page)) {
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let isBack = isBackNavigation(frame, newEntry)
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page.onNavigatingTo(newEntry.entry.context, isBack);
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}
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if (frame) {
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if (!page.parent) {
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if (!frame._currentEntry) {
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frame._currentEntry = newEntry;
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} else {
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frame._navigateToEntry = newEntry;
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}
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frame._addView(page);
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frame.remeasureFrame();
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} else if (page.parent !== frame) {
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throw new Error("Page is already shown on another frame.");
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}
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page.actionBar.update();
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}
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//https://github.com/NativeScript/NativeScript/issues/1201
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page._viewWillDisappear = false;
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page._enableLoadedEvents = true;
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// If page was in backstack or showing modal page it will have parent but it will be in unloaded state so raise loaded here.
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if (!page.isLoaded) {
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page.onLoaded();
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}
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page._enableLoadedEvents = false;
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}
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public viewDidAppear(animated: boolean): void {
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let page = this._owner.get();
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trace.write(page + " viewDidAppear", trace.categories.Navigation);
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if (!page) {
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return;
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}
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//https://github.com/NativeScript/NativeScript/issues/1201
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page._viewWillDisappear = false;
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let frame = this.navigationController ? (<any>this.navigationController).owner : null;
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// Skip navigation events if modal page is shown.
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if (!page.modal && frame) {
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let newEntry = this[ENTRY];
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let isBack = isBackNavigation(frame, newEntry);
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// We are on the current page which happens when navigation is canceled so isBack should be false.
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if (frame.currentPage === page && frame._navigationQueue.length === 0) {
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isBack = false;
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}
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frame._navigateToEntry = null;
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frame._currentEntry = newEntry;
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frame.remeasureFrame();
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frame._updateActionBar(page);
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page.onNavigatedTo(isBack);
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// If page was shown with custom animation - we need to set the navigationController.delegate to the animatedDelegate.
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frame.ios.controller.delegate = this[DELEGATE];
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// Workaround for disabled backswipe on second custom native transition
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this.navigationController.interactivePopGestureRecognizer.delegate = this.navigationController;
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frame._processNavigationQueue(page);
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}
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};
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public viewWillDisappear(animated: boolean): void {
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let page = this._owner.get();
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trace.write(page + " viewWillDisappear", trace.categories.Navigation);
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if (!page) {
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return;
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}
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var frame = page.frame;
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// Skip navigation events if we are hiding because we are about to show modal page.
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if (!page.modal && frame && frame.currentPage === page) {
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var isBack = page.frame && (!this.navigationController || !this.navigationController.viewControllers.containsObject(this));
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page.onNavigatingFrom(isBack);
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}
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//https://github.com/NativeScript/NativeScript/issues/1201
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page._viewWillDisappear = true;
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}
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public viewDidDisappear(animated: boolean): void {
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let page = this._owner.get();
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trace.write(page + " viewDidDisappear", trace.categories.Navigation);
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// Exit if no page or page is hiding because it shows another page modally.
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if (!page || page.modal) {
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return;
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}
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let modalParent = page._modalParent;
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page._modalParent = undefined;
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page._UIModalPresentationFormSheet = false;
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// Clear modal flag on parent page.
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if (modalParent) {
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modalParent._modal = undefined;
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}
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// Manually pop backStack when Back button is pressed or navigating back with edge swipe.
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// Don't pop if we are hiding modally shown page.
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let frame = page.frame;
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if (!modalParent && frame && frame.backStack.length > 0 && (<any>frame)._navigationQueue.length === 0 && frame.currentPage === page) {
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(<any>frame)._backStack.pop();
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}
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page._enableLoadedEvents = true;
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// Remove from parent if page was in frame and we navigated back.
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// Showing page modally will not pass isBack check so currentPage won't be removed from Frame.
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let isBack = frame && (!this.navigationController || !this.navigationController.viewControllers.containsObject(this));
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if (isBack) {
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// Remove parent when navigating back.
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frame._removeView(page);
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}
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// Forward navigation does not remove page from frame so we raise unloaded manually.
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if (page.isLoaded) {
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page.onUnloaded();
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}
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page._enableLoadedEvents = false;
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if (!modalParent) {
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// Last raise onNavigatedFrom event if we are not modally shown.
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page.onNavigatedFrom(isBack);
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}
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}
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}
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export class Page extends pageCommon.Page {
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private _ios: UIViewController;
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public _enableLoadedEvents: boolean;
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public _modalParent: Page;
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public _UIModalPresentationFormSheet: boolean;
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public _viewWillDisappear: boolean;
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constructor(options?: definition.Options) {
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super(options);
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this._ios = UIViewControllerImpl.initWithOwner(new WeakRef(this));
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}
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public requestLayout(): void {
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super.requestLayout();
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if (!this.parent && this.ios && this._nativeView) {
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this._nativeView.setNeedsLayout();
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}
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}
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public _onContentChanged(oldView: View, newView: View) {
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super._onContentChanged(oldView, newView);
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this._removeNativeView(oldView);
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this._addNativeView(newView);
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}
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public onLoaded() {
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// loaded/unloaded events are handled in page viewWillAppear/viewDidDisappear
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if (this._enableLoadedEvents) {
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super.onLoaded();
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}
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this._updateActionBar(false);
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}
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public onUnloaded() {
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// loaded/unloaded events are handled in page viewWillAppear/viewDidDisappear
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if (this._enableLoadedEvents) {
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super.onUnloaded();
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}
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}
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private _addNativeView(view: View) {
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if (view) {
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trace.write("Native: Adding " + view + " to " + this, trace.categories.ViewHierarchy);
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if (view.ios instanceof UIView) {
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this._ios.view.addSubview(view.ios);
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} else if (view.ios instanceof UIViewController) {
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this._ios.addChildViewController(view.ios);
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this._ios.view.addSubview(view.ios.view);
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}
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}
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}
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private _removeNativeView(view: View) {
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if (view) {
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trace.write("Native: Removing " + view + " from " + this, trace.categories.ViewHierarchy);
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if (view.ios instanceof UIView) {
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(<UIView>view.ios).removeFromSuperview();
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} else if (view.ios instanceof UIViewController) {
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(<UIViewController>view.ios).removeFromParentViewController();
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(<UIViewController>view.ios).view.removeFromSuperview();
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}
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}
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}
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get ios(): UIViewController {
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return this._ios;
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}
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get _nativeView(): UIView {
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return this.ios.view;
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}
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protected _showNativeModalView(parent: Page, context: any, closeCallback: Function, fullscreen?: boolean) {
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super._showNativeModalView(parent, context, closeCallback, fullscreen);
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this._modalParent = parent;
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if (!parent.ios.view.window) {
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throw new Error("Parent page is not part of the window hierarchy. Close the current modal page before showing another one!");
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}
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if (fullscreen) {
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this._ios.modalPresentationStyle = UIModalPresentationStyle.UIModalPresentationFullScreen;
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}
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else {
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this._ios.modalPresentationStyle = UIModalPresentationStyle.UIModalPresentationFormSheet;
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this._UIModalPresentationFormSheet = true;
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}
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super._raiseShowingModallyEvent();
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parent.ios.presentViewControllerAnimatedCompletion(this._ios, utils.ios.MajorVersion >= 8, null);
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if (utils.ios.MajorVersion >= 8) {
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var that = this;
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UIViewControllerTransitionCoordinator.prototype.animateAlongsideTransitionCompletion.call(parent.ios.transitionCoordinator(), null, function() {
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that._raiseShownModallyEvent();
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});
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} else {
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this._raiseShownModallyEvent();
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}
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}
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protected _hideNativeModalView(parent: Page) {
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parent.requestLayout();
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parent._ios.dismissModalViewControllerAnimated(utils.ios.MajorVersion >= 8);
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super._hideNativeModalView(parent);
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}
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public _updateActionBar(hidden: boolean) {
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var frame = this.frame;
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if (frame) {
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frame._updateActionBar(this);
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}
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}
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public onMeasure(widthMeasureSpec: number, heightMeasureSpec: number) {
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let width = utils.layout.getMeasureSpecSize(widthMeasureSpec);
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let widthMode = utils.layout.getMeasureSpecMode(widthMeasureSpec);
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let height = utils.layout.getMeasureSpecSize(heightMeasureSpec);
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let heightMode = utils.layout.getMeasureSpecMode(heightMeasureSpec);
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let actionBarWidth: number = 0;
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let actionBarHeight: number = 0;
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// If background span under statusbar reduce available height for page content.
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let statusBarHeight = this.backgroundSpanUnderStatusBar ? uiUtils.ios.getStatusBarHeight() : 0;
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// If this page is inside nested frame - don't substract statusBarHeight again.
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if (this.frame && this.frame.parent) {
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statusBarHeight = 0;
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}
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// Phones does not support fullScreen=false for modal pages so we reduce statusbar only when on tablet and not in fullscreen
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if (this._modalParent && this._UIModalPresentationFormSheet && device.deviceType === DeviceType.Tablet) {
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statusBarHeight = 0;
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}
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if (this.frame && this.frame._getNavBarVisible(this)) {
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// Measure ActionBar with the full height.
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let actionBarSize = View.measureChild(this, this.actionBar, widthMeasureSpec, heightMeasureSpec);
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actionBarWidth = actionBarSize.measuredWidth;
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actionBarHeight = actionBarSize.measuredHeight;
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}
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let heightSpec = utils.layout.makeMeasureSpec(height - actionBarHeight - statusBarHeight, heightMode);
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// Measure content with height - navigationBarHeight. Here we could use actionBarSize.measuredHeight probably.
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let result = View.measureChild(this, this.layoutView, widthMeasureSpec, heightSpec);
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let measureWidth = Math.max(actionBarWidth, result.measuredWidth, this.minWidth);
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let measureHeight = Math.max(result.measuredHeight + actionBarHeight, this.minHeight);
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let widthAndState = View.resolveSizeAndState(measureWidth, width, widthMode, 0);
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let heightAndState = View.resolveSizeAndState(measureHeight, height, heightMode, 0);
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this.setMeasuredDimension(widthAndState, heightAndState);
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}
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public onLayout(left: number, top: number, right: number, bottom: number) {
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View.layoutChild(this, this.actionBar, 0, 0, right - left, bottom - top);
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let navigationBarHeight: number = 0;
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if (this.frame && this.frame._getNavBarVisible(this)) {
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navigationBarHeight = this.actionBar.getMeasuredHeight();
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}
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let statusBarHeight = this.backgroundSpanUnderStatusBar ? uiUtils.ios.getStatusBarHeight() : 0;
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// If this page is inside nested frame - don't substract statusBarHeight again.
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if (this.frame && this.frame.parent) {
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statusBarHeight = 0;
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}
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// Phones does not support fullScreen=false for modal pages so we reduce statusbar only when on tablet and not in fullscreen
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if (this._modalParent && this._UIModalPresentationFormSheet && device.deviceType === DeviceType.Tablet) {
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statusBarHeight = 0;
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}
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View.layoutChild(this, this.layoutView, 0, navigationBarHeight + statusBarHeight, right - left, bottom - top);
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}
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public _addViewToNativeVisualTree(view: View): boolean {
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// ActionBar is added to the native visual tree by default
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if (view === this.actionBar) {
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return true;
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}
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return super._addViewToNativeVisualTree(view);
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}
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} |