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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/global_media_controls/media_toolbar_button_controller.h"
#include "chrome/browser/ui/global_media_controls/media_toolbar_button_controller_delegate.h"
#include "components/global_media_controls/public/media_item_manager.h"
MediaToolbarButtonController::MediaToolbarButtonController(
MediaToolbarButtonControllerDelegate* delegate,
global_media_controls::MediaItemManager* item_manager)
: delegate_(delegate), item_manager_(item_manager) {
DCHECK(delegate_);
item_manager_->AddObserver(this);
UpdateToolbarButtonState();
}
MediaToolbarButtonController::~MediaToolbarButtonController() {
item_manager_->RemoveObserver(this);
}
void MediaToolbarButtonController::OnItemListChanged() {
UpdateToolbarButtonState();
}
void MediaToolbarButtonController::OnMediaDialogOpened() {
UpdateToolbarButtonState();
}
void MediaToolbarButtonController::OnMediaDialogClosed() {
UpdateToolbarButtonState();
// Triggered when media playback is active and a casting session is initiated,
// prompting the user to manage their casting session.
delegate_->MaybeShowStopCastingPromo();
// Triggered exclusively for local media content, encourages the user to begin
// casting if a compatible sink is available.
delegate_->MaybeShowLocalMediaCastingPromo();
}
void MediaToolbarButtonController::ShowToolbarButton() {
if (delegate_display_state_ != DisplayState::kShown) {
delegate_->Show();
delegate_->Enable();
delegate_display_state_ = DisplayState::kShown;
}
}
void MediaToolbarButtonController::UpdateToolbarButtonState() {
if (item_manager_->HasActiveItems() || item_manager_->HasOpenDialog()) {
ShowToolbarButton();
return;
}
if (!item_manager_->HasFrozenItems()) {
if (delegate_display_state_ != DisplayState::kHidden) {
delegate_->Hide();
}
delegate_display_state_ = DisplayState::kHidden;
return;
}
if (!item_manager_->HasOpenDialog()) {
if (delegate_display_state_ != DisplayState::kDisabled) {
delegate_->Disable();
}
delegate_display_state_ = DisplayState::kDisabled;
}
}
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