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| 1 // Copyright 2017 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #import "ios/clean/chrome/browser/ui/web_contents/overlays/web_overlay_queue.h" |
| 6 |
| 7 #include "base/logging.h" |
| 8 #import "ios/clean/chrome/browser/ui/commands/web_overlay_commands.h" |
| 9 #import "ios/shared/chrome/browser/ui/coordinators/browser_coordinator.h" |
| 10 |
| 11 #if !defined(__has_feature) || !__has_feature(objc_arc) |
| 12 #error "This file requires ARC support." |
| 13 #endif |
| 14 |
| 15 DEFINE_WEB_STATE_USER_DATA_KEY(WebOverlayQueue); |
| 16 |
| 17 // static |
| 18 void WebOverlayQueue::CreateForWebState( |
| 19 web::WebState* web_state, |
| 20 id<WebOverlaySchedulerCommands> dispatcher) { |
| 21 DCHECK(web_state); |
| 22 DCHECK(dispatcher); |
| 23 if (!FromWebState(web_state)) { |
| 24 std::unique_ptr<WebOverlayQueue> queue = |
| 25 base::WrapUnique(new WebOverlayQueue(web_state, dispatcher)); |
| 26 web_state->SetUserData(UserDataKey(), std::move(queue)); |
| 27 } |
| 28 } |
| 29 |
| 30 WebOverlayQueue::WebOverlayQueue(web::WebState* web_state, |
| 31 id<WebOverlaySchedulerCommands> dispatcher) |
| 32 : web_state_(web_state), |
| 33 dispatcher_(dispatcher), |
| 34 overlays_([[NSMutableArray alloc] init]), |
| 35 showing_overlay_(false) { |
| 36 DCHECK(web_state); |
| 37 DCHECK(dispatcher); |
| 38 } |
| 39 |
| 40 WebOverlayQueue::~WebOverlayQueue() {} |
| 41 |
| 42 void WebOverlayQueue::AddWebOverlay( |
| 43 WebOverlayCoordinator* overlay_coordinator) { |
| 44 // Add the overlay coordinator to the queue, then notify the scheduler. |
| 45 DCHECK(overlay_coordinator); |
| 46 [overlays_ addObject:overlay_coordinator]; |
| 47 [dispatcher_ scheduleWebOverlayForWebState:web_state_]; |
| 48 } |
| 49 |
| 50 bool WebOverlayQueue::HasQueuedOverlays() const { |
| 51 return [overlays_ count] > 0U; |
| 52 } |
| 53 |
| 54 void WebOverlayQueue::StartNextOverlay(BrowserCoordinator* web_coordinator) { |
| 55 DCHECK(web_coordinator); |
| 56 DCHECK(HasQueuedOverlays()); |
| 57 DCHECK(!IsShowingOverlay()); |
| 58 [[overlays_ firstObject] startOverlayingWebCoordinator:web_coordinator]; |
| 59 showing_overlay_ = true; |
| 60 } |
| 61 |
| 62 bool WebOverlayQueue::IsShowingOverlay() const { |
| 63 return showing_overlay_; |
| 64 } |
| 65 |
| 66 void WebOverlayQueue::WebOverlayWasStopped( |
| 67 WebOverlayCoordinator* overlay_coordinator) { |
| 68 DCHECK(overlay_coordinator); |
| 69 DCHECK_EQ([overlays_ firstObject], overlay_coordinator); |
| 70 DCHECK(showing_overlay_); |
| 71 [overlays_ removeObjectAtIndex:0]; |
| 72 showing_overlay_ = false; |
| 73 } |
| 74 |
| 75 void WebOverlayQueue::CancelOverlays() { |
| 76 // Call the WebKit completion blocks for all queued overlays. |
| 77 for (WebOverlayCoordinator* overlay_coordinator in overlays_.get()) { |
| 78 [overlay_coordinator cancelWebKitCompletion]; |
| 79 } |
| 80 // Stop the currently visible one, if necessary. |
| 81 if (showing_overlay_) |
| 82 [[overlays_ firstObject] stop]; |
| 83 // Empty the queue. |
| 84 [overlays_ removeAllObjects]; |
| 85 } |
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