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69 lines
3.0 KiB
Plaintext
69 lines
3.0 KiB
Plaintext
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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module mojom;
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// Discard related information about a single tab in a browser.
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struct TabDiscardsInfo {
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// The URL associated with the tab. This corresponds to GetLastCommittedURL,
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// and is also what is visible in the Omnibox for a given tab.
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string tab_url;
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// The URL of the favicon being displayed for a tab.
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string favicon_url;
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// The title of the tab, as displayed on the tab itself.
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string title;
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// If the tab corresponds to a Chrome App, this is true.
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bool is_app;
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// If the tab corresponds to internal Chrome WebUI, this is true.
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bool is_internal;
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// If the tab is currently using media functionality (casting, WebRTC, playing
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// audio, etc) this is true.
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bool is_media;
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// If the tab is pinned in its TabStripModel, this is true.
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bool is_pinned;
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// If the tab is currently discarded, this is true.
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bool is_discarded;
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// The number of times this tab has been discarded in the current browser
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// session.
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int32 discard_count;
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// The rank of the tab in the "importance to user" list. The tab with 1 is the
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// most important, the tab with N is the least important.
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int32 utility_rank;
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// The time the tab was last active (foreground in a window), in seconds.
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int32 last_active_seconds;
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// A unique ID for the tab. This is unique for a browser session and follows a
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// tab across tab strip operations, reloads and discards.
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int32 id;
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// Whether or not the tab is eligible for auto-discarding by the browser.
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// This can be manipulated by the chrome://discards UI, or via the discards
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// extension API.
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bool is_auto_discardable;
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};
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// Interface for providing information about discards. Lives in the browser
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// process and is invoked in the renderer process via Javascript code running in
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// the chrome://discards WebUI.
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interface DiscardsDetailsProvider {
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// Returns an array of TabDiscardsInfo containing discard information about
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// each tab currently open in the browser, across all profiles.
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GetTabDiscardsInfo() => (array<TabDiscardsInfo> infos);
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// Sets the auto-discardable state of a tab, as specified by its stable
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// |tab_id|, earlier returned by GetTabDiscardsInfo. Invokes a callback when
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// the change has been made.
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SetAutoDiscardable(int32 tab_id, bool is_auto_discardable) => ();
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// Discards a tab given its |tab_id|. If |urgent| is specified the unload
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// handlers will not be run, and the tab will be unloaded with prejudice.
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// Invokes a callback when the discard is complete.
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DiscardById(int32 tab_id, bool urgent) => ();
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// Discards the least important tab. If |urgent| is specified the unload
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// handlers will not be run, and the tab will be unloaded with prejudice.
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// This can fail to discard a tab if no tabs are currently considered
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// eligible for discard. Invokes a callback when the discard is complete, or
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// if the decision was made not to discard.
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Discard(bool urgent) => ();
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};
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