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// Copyright (c) 2011 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.
cr.define('ntp4', function() {
'use strict';
var TilePage = ntp4.TilePage;
/**
* Creates a new Most Visited object for tiling.
* @constructor
* @extends {HTMLAnchorElement}
*/
function MostVisited() {
var el = cr.doc.createElement('a');
el.__proto__ = MostVisited.prototype;
el.initialize();
return el;
}
MostVisited.prototype = {
__proto__: HTMLAnchorElement.prototype,
initialize: function() {
this.reset();
},
/**
* Clears the DOM hierarchy for this node, setting it back to the default
* for a blank thumbnail.
*/
reset: function() {
this.className = 'most-visited filler';
// TODO(estade): why do we need edit-mode-border?
this.innerHTML =
'<div class="edit-mode-border fills-parent">' +
'<div class="edit-bar-wrapper">' +
'<div class="edit-bar">' +
'<div class="pin"></div>' +
'<div class="spacer"></div>' +
'<div class="remove"></div>' +
'</div>' +
'</div>' +
'<span class="thumbnail-wrapper fills-parent">' +
'<span class="thumbnail fills-parent"></span>' +
'</span>' +
'<span class="title"></span>' +
'</div>';
this.tabIndex = -1;
},
/**
* Update the appearance of this tile according to |data|.
* @param {Object} data A dictionary of relevant data for the page.
*/
updateForData: function(data) {
if (data.filler) {
this.reset();
return;
}
this.tabIndex = 0;
this.classList.remove('filler');
var thumbnailUrl = data.thumbnailUrl || 'chrome://thumb/' + data.url;
this.querySelector('.thumbnail').style.backgroundImage =
url(thumbnailUrl);
},
/**
* Set the size and position of the most visited tile.
* @param {number} size The total size of |this|.
* @param {number} x The x-position.
* @param {number} y The y-position.
* animate.
*/
setBounds: function(size, x, y) {
this.style.width = this.style.height = size + 'px';
this.style.left = x + 'px';
this.style.top = y + 'px';
},
};
var mostVisitedPageGridValues = {
// The fewest tiles we will show in a row.
minColCount: 2,
// The most tiles we will show in a row.
maxColCount: 4,
// TODO(estade): Change these to real values.
// The smallest a tile can be.
minTileWidth: 200,
// The biggest a tile can be.
maxTileWidth: 240,
};
TilePage.initGridValues(mostVisitedPageGridValues);
var THUMBNAIL_COUNT = 8;
/**
* Creates a new MostVisitedPage object.
* @param {string} name The display name for the page.
* @constructor
* @extends {TilePage}
*/
function MostVisitedPage(name) {
var el = new TilePage(name, mostVisitedPageGridValues);
el.__proto__ = MostVisitedPage.prototype;
el.initialize();
return el;
}
MostVisitedPage.prototype = {
__proto__: TilePage.prototype,
initialize: function() {
this.classList.add('most-visited-page');
this.data_ = null;
this.mostVisitedTiles_ = this.getElementsByClassName('most-visited');
},
/**
* Create blank (filler) tiles.
* @private
*/
createTiles_: function() {
for (var i = 0; i < THUMBNAIL_COUNT; i++) {
this.appendTile(new MostVisited());
}
},
/**
* Update the tiles after a change to |data_|.
*/
updateTiles_: function() {
for (var i = 0; i < THUMBNAIL_COUNT; i++) {
var page = this.data_[i];
var tile = this.mostVisitedTiles_[i];
if (i >= this.data_.length)
tile.reset();
else
tile.updateForData(page);
}
},
/**
* Array of most visited data objects.
* @type {Array}
*/
get data() {
return this.data_;
},
set data(data) {
// The first time data is set, create the tiles.
if (!this.data_)
this.createTiles_();
// We append the class name with the "filler" so that we can style fillers
// differently.
this.data_ = data.slice(0, THUMBNAIL_COUNT);
this.updateTiles_();
},
};
return {
MostVisitedPage: MostVisitedPage,
};
});
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