2 * Copyright (C) 2013 Canonical, Ltd.
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.
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.
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/>.
18 import Ubuntu.Components 0.1
19 import LightDM 0.1 as LightDM
20 import "../Components"
25 property alias userList: userList
26 property alias model: userList.model
27 property alias currentIndex: userList.currentIndex
29 readonly property int numAboveBelow: 4
30 readonly property int cellHeight: units.gu(5)
31 readonly property int highlightedHeight: units.gu(10)
32 readonly property int moveDuration: 200
33 property bool wasPrompted: false
35 signal selected(int uid)
36 signal unlocked(int uid)
38 Keys.onEscapePressed: root.resetAuthentication()
45 verticalCenter: parent.verticalCenter
47 height: root.highlightedHeight
48 color: Qt.rgba(0.1, 0.1, 0.1, 0.4)
49 border.color: Qt.rgba(0.4, 0.4, 0.4, 0.4)
50 border.width: units.dp(1)
57 objectName: "userList"
61 preferredHighlightBegin: userList.height / 2 - root.highlightedHeight / 2
62 preferredHighlightEnd: userList.height / 2 - root.highlightedHeight / 2
63 highlightRangeMode: ListView.StrictlyEnforceRange
64 highlightMoveDuration: root.moveDuration
65 flickDeceleration: 10000
67 readonly property bool movingInternally: moveTimer.running || userList.moving
69 onCurrentIndexChanged: {
70 if (LightDM.Greeter.authenticationUser != userList.model.data(currentIndex, LightDM.UserRoles.NameRole)) {
71 root.resetAuthentication();
75 onMovingInternallyChanged: {
76 // Only emit the selected signal once we stop moving to avoid frequent background changes
77 if (!movingInternally) {
78 root.selected(userList.currentIndex);
84 height: root.cellHeight
86 readonly property bool belowHighlight: (userList.currentIndex < 0 && index > 0) || (userList.currentIndex >= 0 && index > userList.currentIndex)
87 readonly property int belowOffset: root.highlightedHeight - root.cellHeight
90 // The goal here is to make names less and less opaque as they
91 // leave the highlight area. Can't simply use index, because
92 // that can change quickly if the user clicks at edges of
93 // list. So we use actual pixel distance.
94 var highlightDist = 0;
95 var realY = y - userList.contentY;
98 if (realY + height <= highlightItem.y)
99 highlightDist = realY + height - highlightItem.y;
100 else if (realY >= highlightItem.y + root.highlightedHeight)
101 highlightDist = realY - highlightItem.y - root.highlightedHeight;
104 return 1 - Math.min(1, (Math.abs(highlightDist) + root.cellHeight) / ((root.numAboveBelow + 1) * root.cellHeight))
108 objectName: "username" + index
112 leftMargin: units.gu(2)
114 rightMargin: units.gu(2)
116 // Add an offset to topMargin for any items below the highlight
117 topMargin: units.gu(1) + (parent.belowHighlight ? parent.belowOffset : 0)
121 elide: Text.ElideRight
123 Behavior on anchors.topMargin { NumberAnimation { duration: root.moveDuration; easing.type: Easing.InOutQuad; } }
131 // Add an offset to topMargin for any items below the highlight
132 topMargin: parent.belowHighlight ? parent.belowOffset : 0
134 height: parent.height
135 enabled: userList.currentIndex !== index
138 userList.currentIndex = index;
141 Behavior on anchors.topMargin { NumberAnimation { duration: root.moveDuration; easing.type: Easing.InOutQuad; } }
145 // This is needed because ListView.moving is not true if the ListView
146 // moves because of an internal event (e.g. currentIndex has changed)
151 interval: root.moveDuration
157 objectName: "infoLabel"
159 bottom: passwordInput.top
161 topMargin: units.gu(1)
162 bottomMargin: units.gu(1)
163 leftMargin: units.gu(2)
164 rightMargin: units.gu(1)
168 width: root.width - anchors.leftMargin - anchors.rightMargin
170 textFormat: Text.StyledText
173 opacity: (userList.movingInternally || text == "") ? 0 : 1
174 Behavior on opacity {
175 NumberAnimation { duration: 100 }
181 objectName: "passwordInput"
183 bottom: highlightItem.bottom
184 horizontalCenter: parent.horizontalCenter
187 height: units.gu(4.5)
188 width: parent.width - anchors.margins * 2
189 opacity: userList.movingInternally ? 0 : 1
191 Behavior on opacity {
192 NumberAnimation { duration: 100 }
196 if (text == "") return; // Might be useful anyway, but mainly workaround for LP 1324159
199 root.focus = true; // so that it can handle Escape presses for us
201 LightDM.Greeter.respond(text);
203 Keys.onEscapePressed: root.resetAuthentication()
208 rightMargin: units.gu(2)
209 verticalCenter: parent.verticalCenter
211 visible: LightDM.Greeter.promptless
212 source: "graphics/icon_arrow.png"
215 WrongPasswordAnimation {
216 id: wrongPasswordAnimation
217 target: passwordInput
221 target: Qt.inputMethod
223 if (!Qt.inputMethod.visible) {
224 passwordInput.focus = false;
232 anchors.fill: passwordInput
233 enabled: LightDM.Greeter.promptless
235 if (LightDM.Greeter.authenticated)
236 root.unlocked(userList.currentIndex);
238 root.resetAuthentication();
242 function resetAuthentication() {
243 if (!userList.currentItem) {
247 passwordInput.placeholderText = "";
248 passwordInput.text = "";
249 passwordInput.focus = false;
250 passwordInput.enabled = true;
251 root.wasPrompted = false;
252 LightDM.Greeter.authenticate(userList.model.data(currentIndex, LightDM.UserRoles.NameRole));
256 target: LightDM.Greeter
259 // inefficient, but we only rarely deal with messages
260 var html = text.replace(/&/g, "&").replace(/</g, "<").replace(/>/g, ">").replace(/\n/g, "<br>")
262 html = "<font color=\"#df382c\">" + html + "</font>"
263 if (infoLabel.text == "")
264 infoLabel.text = html
266 infoLabel.text = infoLabel.text + "<br>" + html
270 passwordInput.text = "";
271 passwordInput.placeholderText = text;
272 passwordInput.enabled = true;
273 passwordInput.echoMode = isSecret ? TextInput.Password : TextInput.Normal;
274 if (root.wasPrompted) // stay in text field if second prompt
275 passwordInput.focus = true;
276 root.wasPrompted = true;
279 onAuthenticationComplete: {
280 if (LightDM.Greeter.promptless) {
281 passwordInput.placeholderText = LightDM.Greeter.authenticated ? "Tap to unlock" : "Retry";
284 if (LightDM.Greeter.authenticated) {
285 root.unlocked(userList.currentIndex);
287 wrongPasswordAnimation.start();
288 root.resetAuthentication();
289 passwordInput.focus = true;
291 passwordInput.text = "";
294 onRequestAuthenticationUser: {
295 // Find index for requested user, if it exists
296 for (var i = 0; i < userList.model.count; i++) {
297 if (user == userList.model.data(i, LightDM.UserRoles.NameRole)) {
299 userList.currentIndex = i;