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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** This file is part of the Qt Quick Controls module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 The Qt Company Ltd 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 2.2
import QtQuick.Controls 1.1
import QtQuick.Controls.Private 1.0
/*!
\qmltype TextArea
\inqmlmodule QtQuick.Controls
\since 5.1
\ingroup controls
\brief Displays multiple lines of editable formatted text.
It can display both plain and rich text. For example:
\qml
TextArea {
width: 240
text: "<b>Hello</b> <i>World!</i>"
}
\endqml
Clipboard support is provided by the cut(), copy(), and paste() functions, and the selection can
be handled in a traditional "mouse" mechanism by setting selectByMouse, or handled completely
from QML by manipulating selectionStart and selectionEnd, or using selectAll() or selectWord().
You can translate between cursor positions (characters from the start of the document) and pixel
points using positionAt() and positionToRectangle().
You can create a custom appearance for a TextArea by
assigning a \l{QtQuick.Controls.Styles::TextAreaStyle}{TextAreaStyle}.
\sa TextField, TextEdit
*/
ScrollView {
id: area
/*!
\qmlproperty bool TextArea::activeFocusOnPress
Whether the TextEdit should gain active focus on a mouse press. By default this is
set to true.
*/
property alias activeFocusOnPress: edit.activeFocusOnPress
/*!
\qmlproperty url TextArea::baseUrl
This property specifies a base URL which is used to resolve relative URLs
within the text.
The default value is the url of the QML file instantiating the TextArea item.
*/
property alias baseUrl: edit.baseUrl
/*!
\qmlproperty bool TextArea::canPaste
Returns true if the TextArea is writable and the content of the clipboard is
suitable for pasting into the TextArea.
*/
readonly property alias canPaste: edit.canPaste
/*!
\qmlproperty bool TextArea::canRedo
Returns true if the TextArea is writable and there are \l {undo}{undone}
operations that can be redone.
*/
readonly property alias canRedo: edit.canRedo
/*!
\qmlproperty bool TextArea::canUndo
Returns true if the TextArea is writable and there are previous operations
that can be undone.
*/
readonly property alias canUndo: edit.canUndo
/*!
\qmlproperty color TextArea::textColor
The text color.
\qml
TextArea { textColor: "orange" }
\endqml
*/
property alias textColor: edit.color
/*!
\qmlproperty int TextArea::cursorPosition
The position of the cursor in the TextArea.
*/
property alias cursorPosition: edit.cursorPosition
/*! \qmlproperty font TextArea::font
The font of the TextArea.
*/
property alias font: edit.font
/*!
\qmlproperty enumeration TextArea::horizontalAlignment
Sets the alignment of the text within the TextArea item's width.
By default, the horizontal text alignment follows the natural alignment of the text,
for example, text that is read from left to right will be aligned to the left.
The valid values for \c horizontalAlignment are:
\list
\li TextEdit.AlignLeft (Default)
\li TextEdit.AlignRight
\li TextEdit.AlignHCenter
\endlist
When using the attached property LayoutMirroring::enabled to mirror application
layouts, the horizontal alignment of text will also be mirrored. However, the property
\c horizontalAlignment will remain unchanged. To query the effective horizontal alignment
of TextArea, use the read-only property \c effectiveHorizontalAlignment.
*/
property alias horizontalAlignment: edit.horizontalAlignment
/*!
\qmlproperty enumeration TextArea::effectiveHorizontalAlignment
Gets the effective horizontal alignment of the text within the TextArea item's width.
To set/get the default horizontal alignment of TextArea, use the property \c horizontalAlignment.
*/
readonly property alias effectiveHorizontalAlignment: edit.effectiveHorizontalAlignment
/*!
\qmlproperty enumeration TextArea::verticalAlignment
Sets the alignment of the text within the TextArea item's height.
The valid values for \c verticalAlignment are:
\list
\li TextEdit.AlignTop
\li TextEdit.AlignBottom
\li TextEdit.AlignVCenter (Default)
\endlist
*/
property alias verticalAlignment: edit.verticalAlignment
/*!
\qmlproperty enumeration TextArea::inputMethodHints
Provides hints to the input method about the expected content of the text edit, and how it
should operate.
The value is a bit-wise combination of flags or Qt.ImhNone if no hints are set.
The default value is \c Qt.ImhNone.
Flags that alter behavior are:
\list
\li Qt.ImhHiddenText - Characters should be hidden, as is typically used when entering passwords.
\li Qt.ImhSensitiveData - Typed text should not be stored by the active input method
in any persistent storage like predictive user dictionary.
\li Qt.ImhNoAutoUppercase - The input method should not try to automatically switch to upper case
when a sentence ends.
\li Qt.ImhPreferNumbers - Numbers are preferred (but not required).
\li Qt.ImhPreferUppercase - Upper case letters are preferred (but not required).
\li Qt.ImhPreferLowercase - Lower case letters are preferred (but not required).
\li Qt.ImhNoPredictiveText - Do not use predictive text (i.e. dictionary lookup) while typing.
\li Qt.ImhDate - The text editor functions as a date field.
\li Qt.ImhTime - The text editor functions as a time field.
\endlist
Flags that restrict input (exclusive flags) are:
\list
\li Qt.ImhDigitsOnly - Only digits are allowed.
\li Qt.ImhFormattedNumbersOnly - Only number input is allowed. This includes decimal point and minus sign.
\li Qt.ImhUppercaseOnly - Only upper case letter input is allowed.
\li Qt.ImhLowercaseOnly - Only lower case letter input is allowed.
\li Qt.ImhDialableCharactersOnly - Only characters suitable for phone dialing are allowed.
\li Qt.ImhEmailCharactersOnly - Only characters suitable for email addresses are allowed.
\li Qt.ImhUrlCharactersOnly - Only characters suitable for URLs are allowed.
\endlist
Masks:
\list
\li Qt.ImhExclusiveInputMask - This mask yields nonzero if any of the exclusive flags are used.
\endlist
*/
property alias inputMethodHints: edit.inputMethodHints
/*!
\qmlproperty int TextArea::length
Returns the total number of plain text characters in the TextArea item.
As this number doesn't include any formatting markup, it may not be the same as the
length of the string returned by the \l text property.
This property can be faster than querying the length the \l text property as it doesn't
require any copying or conversion of the TextArea's internal string data.
*/
readonly property alias length: edit.length
/*!
\qmlproperty int TextArea::lineCount
Returns the total number of lines in the TextArea item.
*/
readonly property alias lineCount: edit.lineCount
/*!
\qmlproperty bool TextArea::readOnly
Whether the user can interact with the TextArea item.
The difference from a disabled text field is that it will appear
to be active, and text can be selected and copied.
If this property is set to \c true, the text cannot be edited by user interaction.
By default this property is \c false.
*/
property alias readOnly: edit.readOnly
/*!
\qmlproperty string TextArea::selectedText
This read-only property provides the text currently selected in the
text edit.
*/
readonly property alias selectedText: edit.selectedText
/*!
\qmlproperty int TextArea::selectionEnd
The cursor position after the last character in the current selection.
This property is read-only. To change the selection, use select(start,end),
selectAll(), or selectWord().
\sa selectionStart, cursorPosition, selectedText
*/
readonly property alias selectionEnd: edit.selectionEnd
/*!
\qmlproperty int TextArea::selectionStart
The cursor position before the first character in the current selection.
This property is read-only. To change the selection, use select(start,end),
selectAll(), or selectWord().
\sa selectionEnd, cursorPosition, selectedText
*/
readonly property alias selectionStart: edit.selectionStart
/*!
\qmlproperty bool TextArea::tabChangesFocus
This property holds whether Tab changes focus, or is accepted as input.
Defaults to \c false.
*/
property bool tabChangesFocus: false
/*!
\qmlproperty string TextArea::text
The text to display. If the text format is AutoText the text edit will
automatically determine whether the text should be treated as
rich text. This determination is made using Qt::mightBeRichText().
*/
property alias text: edit.text
/*!
\qmlproperty enumeration TextArea::textFormat
The way the text property should be displayed.
\list
\li TextEdit.AutoText
\li TextEdit.PlainText
\li TextEdit.RichText
\endlist
The default is TextEdit.PlainText. If the text format is TextEdit.AutoText the text edit
will automatically determine whether the text should be treated as
rich text. This determination is made using Qt::mightBeRichText().
*/
property alias textFormat: edit.textFormat
/*!
\qmlproperty enumeration TextArea::wrapMode
Set this property to wrap the text to the TextArea item's width.
The text will only wrap if an explicit width has been set.
\list
\li TextEdit.NoWrap - no wrapping will be performed. If the text contains insufficient newlines, then implicitWidth will exceed a set width.
\li TextEdit.WordWrap - wrapping is done on word boundaries only. If a word is too long, implicitWidth will exceed a set width.
\li TextEdit.WrapAnywhere - wrapping is done at any point on a line, even if it occurs in the middle of a word.
\li TextEdit.Wrap - if possible, wrapping occurs at a word boundary; otherwise it will occur at the appropriate point on the line, even in the middle of a word.
\endlist
The default is \c TextEdit.NoWrap. If you set a width, consider using TextEdit.Wrap.
*/
property alias wrapMode: edit.wrapMode
/*!
\qmlproperty bool TextArea::selectByMouse
This property determines if the user can select the text with the
mouse.
The default value is \c true.
*/
property alias selectByMouse: edit.selectByMouse
/*!
\qmlproperty bool TextArea::selectByKeyboard
This property determines if the user can select the text with the
keyboard.
If set to \c true, the user can use the keyboard to select the text
even if the editor is read-only. If set to \c false, the user cannot
use the keyboard to select the text even if the editor is editable.
The default value is \c true when the editor is editable,
and \c false when read-only.
\sa readOnly
*/
property alias selectByKeyboard: edit.selectByKeyboard
/*!
\qmlsignal TextArea::linkActivated(string link)
This signal is emitted when the user clicks on a link embedded in the text.
The link must be in rich text or HTML format and the
\a link string provides access to the particular link.
*/
signal linkActivated(string link)
/*!
\qmlsignal TextArea::linkHovered(string link)
\since 5.2
This signal is emitted when the user hovers a link embedded in the text.
The link must be in rich text or HTML format and the
\a link string provides access to the particular link.
\sa hoveredLink
*/
signal linkHovered(string link)
/*!
\qmlproperty string TextArea::hoveredLink
\since QtQuick.Controls 1.1
This property contains the link string when user hovers a link
embedded in the text. The link must be in rich text or HTML format
and the link string provides access to the particular link.
\sa onLinkHovered
*/
readonly property alias hoveredLink: edit.hoveredLink
/*!
\qmlmethod TextArea::append(string)
Appends \a string as a new line to the end of the text area.
*/
function append (string) {
edit.append(string)
__verticalScrollBar.value = __verticalScrollBar.maximumValue
}
/*!
\qmlmethod TextArea::copy()
Copies the currently selected text to the system clipboard.
*/
function copy() {
edit.copy();
}
/*!
\qmlmethod TextArea::cut()
Moves the currently selected text to the system clipboard.
*/
function cut() {
edit.cut();
}
/*!
\qmlmethod TextArea::deselect()
Removes active text selection.
*/
function deselect() {
edit.deselect();
}
/*!
\qmlmethod string TextArea::getFormattedText(int start, int end)
Returns the section of text that is between the \a start and \a end positions.
The returned text will be formatted according to the \l textFormat property.
*/
function getFormattedText(start, end) {
return edit.getFormattedText(start, end);
}
/*!
\qmlmethod string TextArea::getText(int start, int end)
Returns the section of text that is between the \a start and \a end positions.
The returned text does not include any rich text formatting.
*/
function getText(start, end) {
return edit.getText(start, end);
}
/*!
\qmlmethod TextArea::insert(int position, string text)
Inserts \a text into the TextArea at position.
*/
function insert(position, text) {
edit.insert(position, text);
}
/*!
\qmlmethod TextArea::isRightToLeft(int start, int end)
Returns true if the natural reading direction of the editor text
found between positions \a start and \a end is right to left.
*/
function isRightToLeft(start, end) {
return edit.isRightToLeft(start, end);
}
/*!
\qmlmethod TextArea::moveCursorSelection(int position, SelectionMode mode = TextEdit.SelectCharacters)
Moves the cursor to \a position and updates the selection according to the optional \a mode
parameter. (To only move the cursor, set the \l cursorPosition property.)
When this method is called it additionally sets either the
selectionStart or the selectionEnd (whichever was at the previous cursor position)
to the specified position. This allows you to easily extend and contract the selected
text range.
The selection mode specifies whether the selection is updated on a per character or a per word
basis. If not specified the selection mode will default to TextEdit.SelectCharacters.
\list
\li TextEdit.SelectCharacters - Sets either the selectionStart or selectionEnd (whichever was at
the previous cursor position) to the specified position.
\li TextEdit.SelectWords - Sets the selectionStart and selectionEnd to include all
words between the specified position and the previous cursor position. Words partially in the
range are included.
\endlist
For example, take this sequence of calls:
\code
cursorPosition = 5
moveCursorSelection(9, TextEdit.SelectCharacters)
moveCursorSelection(7, TextEdit.SelectCharacters)
\endcode
This moves the cursor to the 5th position, extends the selection end from 5 to 9,
and then retracts the selection end from 9 to 7, leaving the text from the 5th
position to the 7th position selected (the 6th and 7th characters).
The same sequence with TextEdit.SelectWords will extend the selection start to a word boundary
before or on the 5th position, and extend the selection end to a word boundary on or past the 9th position.
*/
function moveCursorSelection(position, mode) {
edit.moveCursorSelection(position, mode);
}
/*!
\qmlmethod TextArea::paste()
Replaces the currently selected text by the contents of the system clipboard.
*/
function paste() {
edit.paste();
}
/*!
\qmlmethod int TextArea::positionAt(int x, int y)
Returns the text position closest to pixel position (\a x, \a y).
Position 0 is before the first character, position 1 is after the first character
but before the second, and so on until position \l {text}.length, which is after all characters.
*/
function positionAt(x, y) {
return edit.positionAt(x, y);
}
/*!
\qmlmethod rectangle TextArea::positionToRectangle(position)
Returns the rectangle at the given \a position in the text. The x, y,
and height properties correspond to the cursor that would describe
that position.
*/
function positionToRectangle(position) {
return edit.positionToRectangle(position);
}
/*!
\qmlmethod TextArea::redo()
Redoes the last operation if redo is \l {canRedo}{available}.
*/
function redo() {
edit.redo();
}
/*!
\qmlmethod string TextArea::remove(int start, int end)
Removes the section of text that is between the \a start and \a end positions from the TextArea.
*/
function remove(start, end) {
return edit.remove(start, end);
}
/*!
\qmlmethod TextArea::select(int start, int end)
Causes the text from \a start to \a end to be selected.
If either start or end is out of range, the selection is not changed.
After calling this, selectionStart will become the lesser
and selectionEnd will become the greater (regardless of the order passed
to this method).
\sa selectionStart, selectionEnd
*/
function select(start, end) {
edit.select(start, end);
}
/*!
\qmlmethod TextArea::selectAll()
Causes all text to be selected.
*/
function selectAll() {
edit.selectAll();
}
/*!
\qmlmethod TextArea::selectWord()
Causes the word closest to the current cursor position to be selected.
*/
function selectWord() {
edit.selectWord();
}
/*!
\qmlmethod TextArea::undo()
Undoes the last operation if undo is \l {canUndo}{available}. Deselects any
current selection, and updates the selection start to the current cursor
position.
*/
function undo() {
edit.undo();
}
/*! \qmlproperty bool TextArea::backgroundVisible
This property determines if the background should be filled or not.
The default value is \c true.
*/
property alias backgroundVisible: colorRect.visible
/*! \internal */
default property alias data: area.data
/*! \qmlproperty real TextArea::textMargin
\since QtQuick.Controls 1.1
The margin, in pixels, around the text in the TextArea.
*/
property alias textMargin: edit.textMargin
frameVisible: true
activeFocusOnTab: true
Accessible.role: Accessible.EditableText
style: Qt.createComponent(Settings.style + "/TextAreaStyle.qml", area)
/*!
\qmlproperty TextDocument TextArea::textDocument
This property exposes the \l QQuickTextDocument of this TextArea.
\sa TextEdit::textDocument
*/
property alias textDocument: edit.textDocument
Flickable {
id: flickable
interactive: false
anchors.fill: parent
TextEdit {
id: edit
focus: true
Rectangle {
id: colorRect
parent: viewport
anchors.fill: parent
color: __style ? __style.backgroundColor : "white"
z: -1
}
property int layoutRecursionDepth: 0
function doLayout() {
// scrollbars affect the document/viewport size and vice versa, so we
// must allow the layout loop to recurse twice until the sizes stabilize
if (layoutRecursionDepth <= 2) {
layoutRecursionDepth++
if (wrapMode == TextEdit.NoWrap) {
__horizontalScrollBar.visible = edit.contentWidth > viewport.width
edit.width = Math.max(viewport.width, edit.contentWidth)
} else {
__horizontalScrollBar.visible = false
edit.width = viewport.width
}
edit.height = Math.max(viewport.height, edit.contentHeight)
flickable.contentWidth = edit.contentWidth
flickable.contentHeight = edit.contentHeight
layoutRecursionDepth--
}
}
Connections {
target: area.viewport
onWidthChanged: edit.doLayout()
onHeightChanged: edit.doLayout()
}
onContentWidthChanged: edit.doLayout()
onContentHeightChanged: edit.doLayout()
onWrapModeChanged: edit.doLayout()
renderType: __style ? __style.renderType : Text.NativeRendering
font: __style ? __style.font : font
color: __style ? __style.textColor : "darkgray"
selectionColor: __style ? __style.selectionColor : "darkred"
selectedTextColor: __style ? __style.selectedTextColor : "white"
wrapMode: TextEdit.WordWrap
textMargin: 4
selectByMouse: true
readOnly: false
KeyNavigation.priority: KeyNavigation.BeforeItem
KeyNavigation.tab: area.tabChangesFocus ? area.KeyNavigation.tab : null
KeyNavigation.backtab: area.tabChangesFocus ? area.KeyNavigation.backtab : null
// keep textcursor within scroll view
onCursorPositionChanged: {
if (cursorRectangle.y >= flickableItem.contentY + viewport.height - cursorRectangle.height - textMargin) {
// moving down
flickableItem.contentY = cursorRectangle.y - viewport.height + cursorRectangle.height + textMargin
} else if (cursorRectangle.y < flickableItem.contentY) {
// moving up
flickableItem.contentY = cursorRectangle.y - textMargin
}
if (cursorRectangle.x >= flickableItem.contentX + viewport.width - textMargin) {
// moving right
flickableItem.contentX = cursorRectangle.x - viewport.width + textMargin
} else if (cursorRectangle.x < flickableItem.contentX) {
// moving left
flickableItem.contentX = cursorRectangle.x - textMargin
}
}
onLinkActivated: area.linkActivated(link)
onLinkHovered: area.linkHovered(link)
MouseArea {
parent: area.viewport
anchors.fill: parent
cursorShape: edit.hoveredLink ? Qt.PointingHandCursor : Qt.IBeamCursor
acceptedButtons: Qt.NoButton
}
}
}
Keys.onPressed: {
if (event.key == Qt.Key_PageUp) {
__verticalScrollBar.value -= area.height
} else if (event.key == Qt.Key_PageDown)
__verticalScrollBar.value += area.height
}
}
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