1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
// Copyright 2013 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.
/**
* @fileoverview Rendering for iframed most visited thumbnails.
*/
window.addEventListener('DOMContentLoaded', function() {
'use strict';
fillMostVisited(document.location, function(params, data) {
function logEvent(eventName) {
chrome.embeddedSearch.newTabPage.logEvent(eventName);
}
function logMostVisitedImpression(tileIndex, provider) {
chrome.embeddedSearch.newTabPage.logMostVisitedImpression(
tileIndex, provider);
}
function displayLink(link) {
document.body.appendChild(link);
window.parent.postMessage('linkDisplayed', '{{ORIGIN}}');
}
function showDomainElement() {
var link = createMostVisitedLink(
params, data.url, data.title, undefined, data.direction,
data.provider);
var domain = document.createElement('div');
domain.textContent = data.domain;
link.appendChild(domain);
displayLink(link);
}
// Called on intentionally empty tiles for which the visuals are handled
// externally by the page itself.
function showEmptyTile() {
displayLink(createMostVisitedLink(
params, data.url, data.title, undefined, data.direction,
data.provider));
}
// Creates and adds an image.
function createThumbnail(src, imageClass) {
var image = document.createElement('img');
if (imageClass) {
image.classList.add(imageClass);
}
image.onload = function() {
var link = createMostVisitedLink(
params, data.url, data.title, undefined, data.direction,
data.provider);
// Use blocker to prevent context menu from showing image-related items.
var blocker = document.createElement('span');
blocker.className = 'blocker';
link.appendChild(blocker);
link.appendChild(image);
displayLink(link);
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_TILE_LOADED);
};
image.onerror = function() {
// If no external thumbnail fallback (etfb), and have domain.
if (!params.etfb && data.domain) {
showDomainElement();
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_GRAY_TILE_FALLBACK);
} else {
showEmptyTile();
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_EXTERNAL_TILE_FALLBACK);
}
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_THUMBNAIL_ERROR);
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_TILE_LOADED);
};
image.src = src;
}
var useIcons = params['icons'] == '1';
if (data.dummy) {
showEmptyTile();
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_EXTERNAL_TILE);
} else if (useIcons && data.largeIconUrl) {
createThumbnail(data.largeIconUrl, 'large-icon');
// TODO(huangs): Log event for large icons.
} else if (!useIcons && data.thumbnailUrl) {
createThumbnail(data.thumbnailUrl, 'thumbnail');
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_THUMBNAIL_TILE);
} else if (data.domain) {
showDomainElement();
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_GRAY_TILE);
} else {
showEmptyTile();
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_EXTERNAL_TILE);
}
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_TILE);
// Log an impression if we know the position of the tile.
if (isFinite(params.pos) && data.provider) {
logMostVisitedImpression(parseInt(params.pos, 10), data.provider);
}
});
});
|
