plasma-framework/declarativeimports/plasmacomponents/qml/TextField.qml
2012-12-23 22:55:07 +01:00

388 lines
11 KiB
QML

/*
* Copyright (C) 2011 by Daker Fernandes Pinheiro <dakerfp@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
import QtQuick 1.1
import org.kde.plasma.core 0.1 as PlasmaCore
import "private" as Private
/**
* A plasma theme based text field widget.
*/
FocusScope {
id: textField
// Common API
/**
* Whether the text field is highlighted or not
*
* If it is true then the problematic lines will be highlighted.
*
* @warning Not implemented in Plasma components.
*/
property bool errorHighlight: false // TODO
/**
* type:string
*
* The text displayed in when the text is empty.
*
* The default value is an empty string, meaning no placeholderText shown.
*/
property string placeholderText
/**
* type:int
* The currently supported input method hints for the text field.
*
* The default values is Qt.ImhNone.
*/
property alias inputMethodHints: textInput.inputMethodHints
/**
* type:font
* The font used in the text field.
*
* The default font value is the font from plasma desktop theme.
*/
property alias font: textInput.font
/**
* type:int
* This property holds the current cursor position.
*/
property alias cursorPosition: textInput.cursorPosition
/**
* type:bool
* This property holds if the text field can be modified by the user interaction.
*
* The default value is false.
*/
property alias readOnly: textInput.readOnly
/**
* type:enum
*
* Specifies how the text should be displayed in the TextField.
*
* The acceptable values are:
* - TextInput.Normal: Displays the text as it is. (Default)
* - TextInput.Password: Displays asterixes instead of characters.
* - TextInput.NoEcho: Displays nothing.
* - TextInput.PasswordEchoOnEdit: Displays all but the current character
* as asterixes.
*
* The default value is TextInput.Normal
*/
property alias echoMode: textInput.echoMode
property alias passwordCharacter: textInput.passwordCharacter
property alias acceptableInput: textInput.acceptableInput // read-only
/**
* type:string
*
* Allows you to set an input mask on the TextField, restricting the
* allowable text inputs.
*
* See QLineEdit::inputMask for further details, as the exact same mask
* strings are used by TextInput.
*/
property alias inputMask: textInput.inputMask
/**
* type:QtObject
*
* Allows you to set a validator on the TextField. When a validator is set
* the TextField will only accept input which leaves the text property in
* an acceptable or intermediate state. The accepted signal will only be
* sent if the text is in an acceptable state when enter is pressed.
*
* Currently supported validators are IntValidator, DoubleValidator and
* RegExpValidator.
*
* An example of using validators is shown below, which allows input of
* integers between 11 and 31 into the text input:
*
* @code
* import QtQuick 1.0
* TextInput {
* validator: IntValidator { bottom: 11; top: 31 }
* focus: true
* }
* @endcode
*/
property alias validator: textInput.validator
/**
* type:string
* The text selected by the user. If no text is selected it holds an empty string.
*
* This property is read-only.
*/
property alias selectedText: textInput.selectedText
/**
* type:int
* The cursor position after the last character in the current selection.
*
* This property is read-only.
*/
property alias selectionEnd: textInput.selectionEnd
/**
* type:int
* The cursor position before the first character in the current selection.
*
* This property is read-only.
*/
property alias selectionStart: textInput.selectionStart
/**
* type:string
* The text in the text field.
*/
property alias text: textInput.text
/**
* type:int
*
* The maximum permitted length of the text in the TextField. If the text
* is too long, it is truncated at the limit.
*
* Default value is 32767.
*/
property alias maximumLength: textInput.maximumLength
/**
* Emitted when the text input is accepted.
*/
signal accepted()
//Plasma api
/**
* Whether the button to clear the text from TextField is visible.
*/
property bool clearButtonShown: false
/**
* Copies the currently selected text to the system clipboard.
*/
function copy() {
textInput.copy();
}
/**
* Replaces the currently selected text by the contents of the system
* clipboard.
*/
function paste() {
textInput.paste();
}
/**
* Moves the currently selected text to the system clipboard.
*/
function cut() {
textInput.cut();
}
/**
* Causes the text from start to 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).
*
* @param int start Start of selection
* @param int end End of selection
*/
function select(start, end) {
textInput.select(start, end);
}
/**
* Causes all text to be selected.
*/
function selectAll() {
textInput.selectAll();
}
/**
* Causes the word closest to the current cursor position to be selected.
*/
function selectWord() {
textInput.selectWord();
}
/**
* This function returns the character position at x pixels from the left
* of the TextField.
*
* Position 0 is before the first character, position 1 is after the first
* character but before the second, and so on until position text.length,
* which is after all characters. This means that for all x values before
* the first character this function returns 0, and for all x values after
* the last character this function returns text.length.
*
* @param int pos x-coordinate we are interested in.
* @return int the character position
*/
function positionAt(pos) {
return textInput.positionAt(pos);
}
/**
* Returns the rectangle at the given position in the text.
*
* The x, y, and height properties correspond to the cursor that would
* describe that position.
*
* @param int pos the text position
* @param type:rectangle the cursor rectangle
*/
function positionToRectangle(pos) {
return textInput.positionToRectangle(pos);
}
// Set active focus to it's internal textInput.
// Overriding QtQuick.Item forceActiveFocus function.
function forceActiveFocus() {
textInput.forceActiveFocus();
}
// Overriding QtQuick.Item activeFocus property.
property alias activeFocus: textInput.activeFocus
// TODO: fix default size
implicitWidth: theme.defaultFont.mSize.width*12 + base.internalPadding*2
implicitHeight: theme.defaultFont.mSize.height + base.internalPadding*2
// TODO: needs to define if there will be specific graphics for
// disabled text fields
opacity: enabled ? 1.0 : 0.5
Private.TextFieldFocus {
id: hover
state: textInput.activeFocus ? "focus" : (mouseWatcher.containsMouse ? "hover" : "hidden")
anchors.fill: base
}
PlasmaCore.FrameSvgItem {
id: base
// TODO: see what is the correct policy for margins
anchors.fill: parent
imagePath: "widgets/lineedit"
prefix: "base"
property real internalPadding: theme.defaultFont.mSize.height*0.3
}
MouseArea {
id: mouseWatcher
anchors.fill: hover
hoverEnabled: true
onClicked: {
// If we don't set focus on click here then clicking between the
// line of text and the bottom or top of the widget will not focus
// it.
textInput.forceActiveFocus();
}
}
Text {
anchors {
left: parent.left
right: parent.right
verticalCenter: parent.verticalCenter
leftMargin: base.margins.left + base.internalPadding
rightMargin: base.margins.right + base.internalPadding
}
text: placeholderText
visible: textInput.text == "" && !textField.activeFocus
// XXX: using textColor and low opacity for theming placeholderText
color: theme.buttonTextColor
opacity: 0.5
elide: Text.ElideRight
clip: true
font.capitalization: theme.defaultFont.capitalization
font.family: theme.defaultFont.family
font.italic: theme.defaultFont.italic
font.letterSpacing: theme.defaultFont.letterSpacing
font.pointSize: theme.defaultFont.pointSize
font.strikeout: theme.defaultFont.strikeout
font.underline: theme.defaultFont.underline
font.weight: theme.defaultFont.weight
font.wordSpacing: theme.defaultFont.wordSpacing
}
TextInput {
id: textInput
anchors {
left: parent.left
right: parent.right
verticalCenter: parent.verticalCenter
// TODO: see what is the correct policy for margins
leftMargin: base.margins.left + base.internalPadding
rightMargin: base.margins.right + (clearButton.opacity > 0 ? clearButton.width : 0) + base.internalPadding
}
passwordCharacter: "•"
selectByMouse: true
color: theme.buttonTextColor
enabled: textField.enabled
clip: true
focus: true
onActiveFocusChanged: {
if (!textField.activeFocus) {
textInput.closeSoftwareInputPanel()
}
}
onAccepted: textField.accepted()
Keys.forwardTo: textField
}
PlasmaCore.IconItem {
id: clearButton
source: "edit-clear-locationbar-rtl"
height: Math.max(textInput.height, theme.smallIconSize)
width: height
opacity: (textInput.text != "" && clearButtonShown) ? 1 : 0
Behavior on opacity {
NumberAnimation {
duration: 250
easing.type: Easing.InOutQuad
}
}
anchors {
right: parent.right
rightMargin: y
verticalCenter: textInput.verticalCenter
}
MouseArea {
anchors.fill: parent
onClicked: {
textInput.text = ""
textInput.forceActiveFocus()
}
}
}
}