[cc] Initial checkin of cc-frame-viewer

tools/cc-frame-viewer/src/model/tile.js

+/* Copyright (c) 2012 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+'use strict';
+
+base.require('model.constants');
+
+base.exportTo('ccfv.model', function() {
+
+  /**
+   * Represents a cc::Tile over the course of its lifetime.
+   *
+   * @constructor
+   */
+  function TileHistory(id) {
+    this.id = id;
+    this.tilesBySnapshotNumber = {};
+    this.picturePile = undefined;
+    this.contentsScale = undefined;
+
+    this.selected = false;
+  }
+
+  TileHistory.prototype = {
+    get title() {
+      return 'TileHistory ' + this.id;
+    },
+
+    getOrCreateTileForLTHI: function(lthi) {
+      if (!this.tilesBySnapshotNumber[lthi.snapshotNumber])
+        this.tilesBySnapshotNumber[lthi.snapshotNumber] = new Tile(this);
+      return this.tilesBySnapshotNumber[lthi.snapshotNumber];
+    },
+
+    dumpToSimpleObject: function(obj) {
+      obj.id = this.id;
+      obj.picturePile = this.picturePile;
+      obj.contentsScale = this.contentsScale;
+    }
+  };
+
+  /**
+   * Represents a cc::Tile at an instant in time.
+   *
+   * @constructor
+   */
+  function Tile(history) {
+    this.history = history;
+    this.managedState = undefined;
+    this.priority = [undefined, undefined];
+  }
+
+  Tile.prototype = {
+    get id() {
+      return this.history.id;
+    },
+
+    get contentsScale() {
+      return this.history.contents_scale;
+    },
+
+    get picturePile() {
+      return this.history.picture_pile;
+    },
+
+    get title() {
+      return 'Tile ' + this.id;
+    },
+
+    get selected() {
+      return this.history.selected;
+    },
+
+    set selected(s) {
+      this.history.selected = s;
+    },
+
+    dumpToSimpleObject: function(obj) {
+      obj.history = {};
+      this.history.dumpToSimpleObject(obj.history);
+      obj.managedState = this.managedState;
+      obj.priority = [{}, {}];
+      dumpAllButQuadToSimpleObject.call(this.priority[0], obj.priority[0]);
+      dumpAllButQuadToSimpleObject.call(this.priority[1], obj.priority[1]);
+    },
+  };
+
+  // Called with priority object as context.
+  function dumpAllButQuadToSimpleObject(obj) {
+    for (var k in this) {
+      if (k == 'current_screen_quad')
+        continue;
+      obj[k] = this[k];
+    }
+  }
+
+  return {
+    Tile: Tile,
+    TileHistory: TileHistory
+  }
+});
+