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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
// Copyright 2014 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('print_preview', function() {
'use strict';
/**
* Toggles visibility of the specified printing options sections.
* @param {!print_preview.DestinationStore} destinationStore To listen for
* destination changes.
* @param {!Array.<print_preview.SettingsSection>} settingsSections Sections
* to toggle by this component.
* @constructor
* @extends {print_preview.Component}
*/
function MoreSettings(destinationStore, settingsSections) {
print_preview.Component.call(this);
/** @private {!print_preview.DestinationStore} */
this.destinationStore_ = destinationStore;
/** @private {!Array.<print_preview.SettingsSection>} */
this.settingsSections_ = settingsSections;
/** @private {MoreSettings.SettingsToShow} */
this.settingsToShow_ = MoreSettings.SettingsToShow.MOST_POPULAR;
/** @private {boolean} */
this.capabilitiesReady_ = false;
/** @private {boolean} */
this.firstDestinationReady_ = false;
/**
* Used to record usage statistics.
* @private {!print_preview.PrintSettingsUiMetricsContext}
*/
this.metrics_ = new print_preview.PrintSettingsUiMetricsContext();
};
/**
* Which settings are visible to the user.
* @enum {number}
*/
MoreSettings.SettingsToShow = {
MOST_POPULAR: 1,
ALL: 2
};
MoreSettings.prototype = {
__proto__: print_preview.Component.prototype,
/** @return {boolean} Returns {@code true} if settings are expanded. */
get isExpanded() {
return this.settingsToShow_ == MoreSettings.SettingsToShow.ALL;
},
/** @override */
enterDocument: function() {
print_preview.Component.prototype.enterDocument.call(this);
this.tracker.add(this.getElement(), 'click', this.onClick_.bind(this));
this.tracker.add(
this.destinationStore_,
print_preview.DestinationStore.EventType.DESTINATION_SELECT,
this.onDestinationChanged_.bind(this));
this.tracker.add(
this.destinationStore_,
print_preview.DestinationStore.EventType.
SELECTED_DESTINATION_CAPABILITIES_READY,
this.onDestinationCapabilitiesReady_.bind(this));
this.settingsSections_.forEach(function(section) {
this.tracker.add(
section,
print_preview.SettingsSection.EventType.COLLAPSIBLE_CONTENT_CHANGED,
this.updateState_.bind(this));
}.bind(this));
this.updateState_(true);
},
/**
* Toggles "more/fewer options" state and notifies all the options sections
* to reflect the new state.
* @private
*/
onClick_: function() {
this.settingsToShow_ =
this.settingsToShow_ == MoreSettings.SettingsToShow.MOST_POPULAR ?
MoreSettings.SettingsToShow.ALL :
MoreSettings.SettingsToShow.MOST_POPULAR;
this.updateState_(false);
this.metrics_.record(this.isExpanded ?
print_preview.Metrics.PrintSettingsUiBucket.MORE_SETTINGS_CLICKED :
print_preview.Metrics.PrintSettingsUiBucket.LESS_SETTINGS_CLICKED);
},
/**
* Called when the destination selection has changed. Updates UI elements.
* @private
*/
onDestinationChanged_: function() {
this.firstDestinationReady_ = true;
this.capabilitiesReady_ = false;
this.updateState_(false);
},
/**
* Called when the destination selection has changed. Updates UI elements.
* @private
*/
onDestinationCapabilitiesReady_: function() {
this.capabilitiesReady_ = true;
this.updateState_(false);
},
/**
* Updates the component appearance according to the current state.
* @param {boolean} noAnimation Whether section visibility transitions
* should not be animated.
* @private
*/
updateState_: function(noAnimation) {
if (!this.firstDestinationReady_) {
fadeOutElement(this.getElement(), noAnimation);
return;
}
// When capabilities are not known yet, don't change the state to avoid
// unnecessary fade in/out cycles.
if (!this.capabilitiesReady_)
return;
var all = this.settingsToShow_ == MoreSettings.SettingsToShow.ALL;
this.getChildElement('.more-settings-label').textContent =
loadTimeData.getString(all ? 'lessOptionsLabel' : 'moreOptionsLabel');
var iconEl = this.getChildElement('.more-settings-icon');
iconEl.classList.toggle('more-settings-icon-plus', !all);
iconEl.classList.toggle('more-settings-icon-minus', all);
var availableSections = this.settingsSections_.reduce(
function(count, section) {
return count + (section.isAvailable() ? 1 : 0);
}, 0);
// Magic 6 is chosen as the number of sections when it still feels like
// manageable and not too crowded.
var hasSectionsToToggle =
availableSections > 6 &&
this.settingsSections_.some(function(section) {
return section.hasCollapsibleContent();
});
if (hasSectionsToToggle)
fadeInElement(this.getElement(), noAnimation);
else
fadeOutElement(this.getElement(), noAnimation);
var collapseContent =
this.settingsToShow_ == MoreSettings.SettingsToShow.MOST_POPULAR &&
hasSectionsToToggle;
this.settingsSections_.forEach(function(section) {
section.setCollapseContent(collapseContent, noAnimation);
});
}
};
// Export
return {
MoreSettings: MoreSettings
};
});
|
