Unity 8
 All Classes Functions
Lockscreen.qml
1 /*
2  * Copyright (C) 2013 Canonical, Ltd.
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; version 3.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  */
16 
17 import QtQuick 2.0
18 import Ubuntu.Components 1.0
19 import Ubuntu.Components.Popups 1.0
20 
21 Showable {
22  id: root
23 
24  // Determine if a numeric or alphanumeric pad is used.
25  property bool alphaNumeric: false
26 
27  // Informational text. (e.g. some text to tell which domain this is pin is entered for)
28  property string infoText: ""
29 
30  // Retries text (e.g. 3 retries left)
31  property string retryText: ""
32 
33  // The text to be displayed in case the login failed
34  property string errorText: ""
35 
36  // In case the Lockscreen can show a greeter message, this is the username
37  property string username: ""
38 
39  // Set those to a value greater 0 to restrict the pin length.
40  // If both are unset, the Lockscreen will show a confirm button and allow typing any length of pin before
41  // confirming. If minPinLength is set to a value > 0, the confirm button will only become active when the
42  // entered pin is at least that long. If maxPinLength is set, the lockscreen won't allow entering any
43  // more numbers than that. If both are set to the same value, the lockscreen will enter auto confirming
44  // behavior, hiding the confirmation button and triggering that automatically when the entered pin reached
45  // that length. This is ignored by the alphaNumeric lockscreen as that one is always confirmed by pressing
46  // enter on the OSK.
47  property int minPinLength: -1
48  property int maxPinLength: -1
49 
50  property url background: ""
51 
52  signal entered(string passphrase)
53  signal cancel()
54  signal emergencyCall()
55  signal infoPopupConfirmed()
56 
57  onRequiredChanged: {
58  if (required && pinPadLoader.item) {
59  clear(false)
60  }
61  }
62 
63  function forceDelay(delay) {
64  forcedDelayTimer.interval = delay
65  forcedDelayTimer.start()
66  }
67 
68  function reset() {
69  // This causes the loader below to destry and recreate the source
70  pinPadLoader.resetting = true;
71  pinPadLoader.resetting = false;
72  }
73 
74  function clear(showAnimation) {
75  if (pinPadLoader.item) {
76  pinPadLoader.item.clear(showAnimation);
77  }
78  pinPadLoader.showWrongText = showAnimation
79  pinPadLoader.waiting = false
80  }
81 
82  function showInfoPopup(title, text) {
83  PopupUtils.open(infoPopupComponent, root, {title: title, text: text})
84  }
85 
86  Timer {
87  id: forcedDelayTimer
88  onTriggered: pinPadLoader.showWrongText = false
89  }
90 
91  Rectangle {
92  // In case background fails to load or is undefined
93  id: backgroundBackup
94  anchors.fill: parent
95  color: "black"
96  }
97 
98  Image {
99  id: backgroundImage
100  objectName: "lockscreenBackground"
101  anchors {
102  fill: parent
103  }
104  source: root.required ? root.background : ""
105  fillMode: Image.PreserveAspectCrop
106  }
107 
108  MouseArea {
109  anchors.fill: root
110  }
111 
112  Loader {
113  id: pinPadLoader
114  objectName: "pinPadLoader"
115  anchors {
116  left: parent.left
117  right: parent.right
118  verticalCenter: parent.verticalCenter
119  verticalCenterOffset: root.alphaNumeric ? -units.gu(10) : 0
120  }
121  property bool resetting: false
122  property bool waiting: false
123  property bool showWrongText: false
124 
125  source: (!resetting && root.required) ? (root.alphaNumeric ? "PassphraseLockscreen.qml" : "PinLockscreen.qml") : ""
126  onSourceChanged: {
127  waiting = false
128  showWrongText = false
129  }
130  onLoaded: {
131  if (forcedDelayTimer.running) {
132  pinPadLoader.item.clear(true)
133  }
134  }
135 
136  Connections {
137  target: pinPadLoader.item
138 
139  onEntered: {
140  pinPadLoader.waiting = true
141  root.entered(passphrase);
142  }
143 
144  onCancel: {
145  root.cancel()
146  }
147  }
148 
149  Binding {
150  target: pinPadLoader.item
151  property: "minPinLength"
152  value: root.minPinLength
153  }
154  Binding {
155  target: pinPadLoader.item
156  property: "maxPinLength"
157  value: root.maxPinLength
158  }
159  Binding {
160  target: pinPadLoader.item
161  property: "infoText"
162  value: root.infoText
163  }
164  Binding {
165  target: pinPadLoader.item
166  property: "retryText"
167  value: forcedDelayTimer.running ? i18n.tr("Please wait") : root.retryText
168  }
169  Binding {
170  target: pinPadLoader.item
171  property: "errorText"
172  value: forcedDelayTimer.running ? i18n.tr("Too many incorrect attempts") :
173  (pinPadLoader.showWrongText ? root.errorText : "")
174  }
175  Binding {
176  target: pinPadLoader.item
177  property: "username"
178  value: root.username
179  }
180  Binding {
181  target: pinPadLoader.item
182  property: "entryEnabled"
183  value: !pinPadLoader.waiting && !forcedDelayTimer.running
184  }
185  }
186 
187  Label {
188  id: emergencyCallLabel
189  objectName: "emergencyCallLabel"
190 
191  // FIXME: We *should* show emergency dialer if there is a SIM present,
192  // regardless of whether the side stage is enabled. But right now,
193  // the assumption is that narrow screens are phones which have SIMs
194  // and wider screens are tablets which don't. When we do allow this
195  // on devices with a side stage and a SIM, work should be done to
196  // ensure that the main stage is disabled while the dialer is present
197  // in the side stage.
198  visible: !shell.sideStageEnabled
199 
200  anchors {
201  bottom: parent.bottom
202  bottomMargin: units.gu(4)
203  horizontalCenter: parent.horizontalCenter
204  }
205 
206  text: i18n.tr("Emergency Call")
207  color: "#f3f3e7"
208  opacity: 0.6
209  }
210 
211  MouseArea {
212  anchors.fill: emergencyCallLabel
213  onClicked: root.emergencyCall()
214  enabled: emergencyCallLabel.visible
215  }
216 
217  Component {
218  id: infoPopupComponent
219  Dialog {
220  id: dialog
221  objectName: "infoPopup"
222  modal: true
223 
224  Button {
225  objectName: "infoPopupOkButton"
226  text: i18n.tr("OK")
227  onClicked: {
228  PopupUtils.close(dialog)
229  root.infoPopupConfirmed();
230  }
231  }
232  }
233  }
234 }