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
|
// 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.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.provider));
}
// Creates and adds an image.
function createThumbnail(src) {
var image = new Image();
image.onload = function() {
var shadow = document.createElement('span');
shadow.classList.add('shadow');
var link = createMostVisitedLink(
params, data.url, data.title, undefined, data.provider);
link.appendChild(shadow);
link.appendChild(image);
displayLink(link);
};
image.onerror = function() {
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_THUMBNAIL_ERROR);
if (data.domain) {
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_GRAY_TILE_FALLBACK);
showDomainElement();
} else {
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_EXTERNAL_TILE_FALLBACK);
showEmptyTile();
}
};
image.src = src;
}
// Log an impression if we know the position of the tile.
if (isFinite(params.pos) && data.provider) {
logMostVisitedImpression(parseInt(params.pos, 10), data.provider);
}
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_TILE);
if (data.thumbnailUrl) {
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_THUMBNAIL_TILE);
createThumbnail(data.thumbnailUrl);
} else if (data.domain) {
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_GRAY_TILE);
showDomainElement();
} else {
logEvent(NTP_LOGGING_EVENT_TYPE.NTP_EXTERNAL_TILE);
showEmptyTile();
}
});
});
|
