added android components
[mardrone] / mardrone / imports / com / nokia / android.1.1 / TextArea.qml
diff --git a/mardrone/imports/com/nokia/android.1.1/TextArea.qml b/mardrone/imports/com/nokia/android.1.1/TextArea.qml
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Components project.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 1.1
+import "." 1.1
+
+FocusScopeItem {
+    id: root
+
+    // Common public API
+    property alias font: textEdit.font
+    property alias cursorPosition: textEdit.cursorPosition
+    property alias horizontalAlignment: textEdit.horizontalAlignment
+    property alias inputMethodHints: textEdit.inputMethodHints
+    property alias verticalAlignment: textEdit.verticalAlignment
+    property alias readOnly: textEdit.readOnly
+    property alias selectedText: textEdit.selectedText
+    property alias selectionEnd: textEdit.selectionEnd
+    property alias selectionStart: textEdit.selectionStart
+    property alias text: textEdit.text
+    property alias textFormat: textEdit.textFormat
+    property alias wrapMode: textEdit.wrapMode
+    property bool errorHighlight: false
+
+    function copy() {
+        textEdit.copy()
+    }
+
+    function paste() {
+        textEdit.paste()
+    }
+
+    function cut() {
+        textEdit.cut()
+    }
+
+    function select(start, end) {
+        textEdit.select(start, end)
+    }
+
+    function selectAll() {
+        textEdit.selectAll()
+    }
+
+    function selectWord() {
+        textEdit.selectWord()
+    }
+
+    function positionAt(x, y) {
+        var p = mapToItem(textEdit, x, y);
+        return textEdit.positionAt(p.x, p.y)
+    }
+
+    function positionToRectangle(pos) {
+        var rect = textEdit.positionToRectangle(pos)
+        var point = mapFromItem(textEdit, rect.x, rect.y)
+        rect.x = point.x; rect.y = point.y
+        return rect;
+    }
+
+    function openSoftwareInputPanel() {
+        textEdit.openSoftwareInputPanel()
+    }
+
+    function closeSoftwareInputPanel() {
+        textEdit.closeSoftwareInputPanel()
+    }
+
+    // API extensions
+    property alias placeholderText: placeholder.text
+    // TODO: Refactor implicit size when following bugs are resolved
+    // http://bugreports.qt.nokia.com/browse/QTBUG-14957
+    // http://bugreports.qt.nokia.com/browse/QTBUG-16665
+    // http://bugreports.qt.nokia.com/browse/QTBUG-16710 (fixed in Qt 4.7.2)
+    // http://bugreports.qt.nokia.com/browse/QTBUG-12305 (fixed in QtQuick1.1)
+    property real platformMaxImplicitWidth: -1
+    property real platformMaxImplicitHeight: -1
+    property bool platformInverted: false
+    property bool enabled: true // overriding due to QTBUG-15797 and related bugs
+
+    implicitWidth: {
+        var preferredWidth = placeholder.visible ? placeholder.model.paintedWidth
+                                                 : flick.contentWidth
+        preferredWidth = Math.max(preferredWidth, privy.minImplicitWidth)
+        preferredWidth += container.horizontalMargins
+        if (root.platformMaxImplicitWidth >= 0)
+            return Math.min(preferredWidth, root.platformMaxImplicitWidth)
+        return preferredWidth
+    }
+
+    implicitHeight: {
+        var preferredHeight = placeholder.visible ? placeholder.model.paintedHeight
+                                                  : flick.contentHeight
+        preferredHeight += container.verticalMargins
+        // layout spec gives minimum height (textFieldHeight) which includes required padding
+        preferredHeight = Math.max(privateStyle.textFieldHeight, preferredHeight)
+        if (root.platformMaxImplicitHeight >= 0)
+            return Math.min(preferredHeight, root.platformMaxImplicitHeight)
+        return preferredHeight
+    }
+
+    onWidthChanged: {
+        // Detect when a width has been explicitly set. Needed to determine if the TextEdit should
+        // grow horizontally or wrap. I.e. in determining the model's width. There's no way to get
+        // notified of having an explicit width set. Therefore it's polled in widthChanged.
+        privy.widthExplicit = root.widthExplicit()
+    }
+
+    Connections {
+         target: screen
+         onCurrentOrientationChanged: {
+             delayedEnsureVisible.start()
+             fade.start()
+             scroll.start()
+         }
+    }
+
+    QtObject {
+        id: privy
+        // TODO: More consistent minimum width for empty TextArea than 20 * " " on current font?
+        property real minImplicitWidth: privateStyle.textWidth("                    ", textEdit.font)
+        property bool widthExplicit: false
+        property bool wrap: privy.widthExplicit || root.platformMaxImplicitWidth >= 0
+        property real wrapWidth: privy.widthExplicit ? root.width - container.horizontalMargins
+                                                     : root.platformMaxImplicitWidth - container.horizontalMargins
+        function bg_postfix() {
+            if (root.errorHighlight)
+                return "error"
+            else if (root.readOnly || !root.enabled)
+                return "uneditable"
+            else if (textEdit.activeFocus)
+                return "highlighted"
+            else
+                return "editable"
+        }
+    }
+
+    BorderImage {
+        id: background
+        anchors.fill: parent
+        source: privateStyle.imagePath("qtg_fr_textfield_" + privy.bg_postfix(), root.platformInverted)
+        border {
+            left: platformStyle.borderSizeMedium
+            top: platformStyle.borderSizeMedium
+            right: platformStyle.borderSizeMedium
+            bottom: platformStyle.borderSizeMedium
+        }
+        smooth: true
+    }
+
+    Item {
+        id: container
+
+        property real horizontalMargins:   container.anchors.leftMargin
+                                         + container.anchors.rightMargin
+                                         + flick.anchors.leftMargin
+                                         + flick.anchors.rightMargin
+
+        property real verticalMargins:  container.anchors.topMargin
+                                      + container.anchors.bottomMargin
+                                      + flick.anchors.topMargin
+                                      + flick.anchors.bottomMargin
+
+        anchors {
+            fill: parent
+            leftMargin: platformStyle.paddingSmall; rightMargin: platformStyle.paddingSmall
+            topMargin: platformStyle.paddingMedium; bottomMargin: platformStyle.paddingMedium
+        }
+
+        clip: true
+
+        // TODO: Should placeholder also be scrollable?
+        Text {
+            id: placeholder
+            objectName: "placeholder"
+
+            // TODO: See TODO: Refactor implicit size...
+            property variant model: Text {
+                font: textEdit.font
+                text: placeholder.text
+                visible: false
+                wrapMode: textEdit.wrapMode
+                horizontalAlignment: textEdit.horizontalAlignment
+                verticalAlignment: textEdit.verticalAlignment
+                opacity: 0
+
+                Binding {
+                    when: privy.wrap
+                    target: placeholder.model
+                    property: "width"
+                    value: privy.wrapWidth
+                }
+            }
+
+            color: root.platformInverted ? platformStyle.colorNormalMidInverted
+                                         : platformStyle.colorNormalMid
+            font: textEdit.font
+            horizontalAlignment: textEdit.horizontalAlignment
+            verticalAlignment: textEdit.verticalAlignment
+            visible: {
+                if (text && (textEdit.model.paintedWidth == 0 && textEdit.model.paintedHeight <= textEdit.cursorRectangle.height))
+                    return (readOnly || !textEdit.activeFocus)
+                else
+                    return false
+            }
+            wrapMode: textEdit.wrapMode
+            x: flick.x; y: flick.y
+            height: flick.height; width: flick.width
+        }
+
+        Flickable {
+            id: flick
+
+            property real tiny: Math.round(platformStyle.borderSizeMedium / 2)
+
+            function ensureVisible(rect) {
+                if (Math.round(contentX) > Math.round(rect.x))
+                    contentX = rect.x
+                else if (Math.round(contentX + width) < Math.round(rect.x + rect.width))
+                    contentX = rect.x + rect.width - width
+
+                if (Math.round(contentY) > Math.round(rect.y))
+                    contentY = rect.y
+                else if (Math.round(contentY + height) < Math.round(rect.y + rect.height))
+                     contentY = rect.y + rect.height - height
+            }
+
+            anchors {
+                fill: parent
+                leftMargin: tiny
+                rightMargin: tiny
+                topMargin: tiny / 2
+                bottomMargin: tiny / 2
+            }
+
+            boundsBehavior: Flickable.StopAtBounds
+            contentHeight: textEdit.model.paintedHeight
+            contentWidth: textEdit.model.paintedWidth +
+                         (textEdit.wrapMode == TextEdit.NoWrap ? textEdit.cursorRectangle.width : 0)
+            interactive: root.enabled
+
+            onHeightChanged: {
+                if(textEdit.cursorVisible || textEdit.cursorPosition == textEdit.selectionEnd)
+                    ensureVisible(textEdit.cursorRectangle)
+            }
+
+            onWidthChanged: {
+                if(textEdit.cursorVisible || textEdit.cursorPosition == textEdit.selectionEnd)
+                    ensureVisible(textEdit.cursorRectangle)
+            }
+
+            TextEdit {
+                id: textEdit
+                objectName: "textEdit"
+
+                // TODO: See TODO: Refactor implicit size...
+                property variant model: TextEdit {
+                    font: textEdit.font
+                    text: textEdit.text
+                    horizontalAlignment: textEdit.horizontalAlignment
+                    verticalAlignment: textEdit.verticalAlignment
+                    wrapMode: textEdit.wrapMode
+                    visible: false
+                    opacity: 0
+
+                    // In Wrap mode, if the width is bound the text will always get wrapped at the
+                    // set width. If the width is not bound the text won't get wrapped but
+                    // paintedWidth will increase.
+                    Binding {
+                        when: privy.wrap
+                        target: textEdit.model
+                        property: "width"
+                        value: privy.wrapWidth
+                    }
+                }
+                activeFocusOnPress: false
+                enabled: root.enabled
+                focus: true
+                font { family: platformStyle.fontFamilyRegular; pixelSize: platformStyle.fontSizeMedium }
+                color: root.platformInverted ? platformStyle.colorNormalLightInverted
+                                             : platformStyle.colorNormalDark
+                cursorVisible: activeFocus && !selectedText
+                selectedTextColor: root.platformInverted ? platformStyle.colorNormalDarkInverted
+                                                         : platformStyle.colorNormalLight
+                selectionColor: root.platformInverted ? platformStyle.colorTextSelectionInverted
+                                                      : platformStyle.colorTextSelection
+                textFormat: TextEdit.AutoText
+                wrapMode: TextEdit.Wrap
+                height: flick.height
+                width: flick.width
+                // TODO: Make bug report?
+                // Called too early (before TextEdit size is adjusted) delay ensureVisible call a bit
+                onCursorRectangleChanged: delayedEnsureVisible.start()
+                onActiveFocusChanged: {
+                    if (activeFocus) {
+                        horizontal.flash()
+                        vertical.flash()
+                    }
+                }
+                onEnabledChanged: {
+                    if (!enabled) {
+                        deselect()
+                        // De-focusing requires setting focus elsewhere, in this case editor's parent
+                        if (root.parent)
+                            root.parent.forceActiveFocus()
+                    }
+                }
+
+                Keys.forwardTo: touchController
+
+                TextTouchController {
+                    id: touchController
+
+                    //  selection handles require touch area geometry to differ from TextEdit's geometry
+                    anchors {
+                        top: editor.top; topMargin: -container.verticalMargins / 2
+                        left: editor.left; leftMargin: -container.horizontalMargins / 2
+                    }
+                    height: Math.max(root.height, flick.contentHeight + container.verticalMargins * 2)
+                    width: Math.max(root.width, flick.contentWidth + container.horizontalMargins * 2)
+                    editorScrolledX: flick.contentX - (container.horizontalMargins / 2)
+                    editorScrolledY: flick.contentY - (container.verticalMargins / 2)
+                    copyEnabled: textEdit.selectedText
+                    cutEnabled: !textEdit.readOnly && textEdit.selectedText
+                    platformInverted: root.platformInverted
+                    Component.onCompleted: flick.movementEnded.connect(touchController.flickEnded)
+                    Connections { target: screen; onCurrentOrientationChanged: touchController.updateGeometry() }
+                    Connections {
+                        target: textEdit
+                        onHeightChanged: touchController.updateGeometry()
+                        onWidthChanged: touchController.updateGeometry()
+                        onHorizontalAlignmentChanged: touchController.updateGeometry()
+                        onVerticalAlignmentChanged: touchController.updateGeometry()
+                        onWrapModeChanged: touchController.updateGeometry()
+                        onFontChanged: touchController.updateGeometry()
+                    }
+                }
+            }
+
+            PropertyAnimation { id: fade; target: textEdit; property: "opacity"; from: 0; to: 1; duration: 250 }
+            PropertyAnimation { id: scroll; target: flick; property: "contentY"; duration: 250 }
+        }
+
+        ScrollBar {
+            id: vertical
+            anchors {
+                top: flick.top;
+                topMargin: -flick.tiny / 2;
+                left: flick.right;
+            }
+            flickableItem: flick
+            interactive: false
+            orientation: Qt.Vertical
+            height: container.height
+            platformInverted: root.platformInverted
+        }
+
+        ScrollBar {
+            id: horizontal
+            anchors {
+                left: flick.left;
+                leftMargin: -flick.tiny;
+                bottom: container.bottom;
+                bottomMargin: -flick.tiny / 2
+                rightMargin: vertical.opacity ? vertical.width : 0
+            }
+            flickableItem: flick
+            interactive: false
+            orientation: Qt.Horizontal
+            width: container.width
+            platformInverted: root.platformInverted
+        }
+
+        Timer {
+            id: delayedEnsureVisible
+            interval: 1
+            onTriggered: flick.ensureVisible(textEdit.cursorRectangle)
+        }
+    }
+}