Wt
3.3.8
|
A widget that represents a push button. More...
#include <Wt/WPushButton>
Public Member Functions | |
WPushButton (WContainerWidget *parent=0) | |
Creates a push button. | |
WPushButton (const WString &text, WContainerWidget *parent=0) | |
Creates a push button with given label text. More... | |
WPushButton (const WString &text, TextFormat textFormat, WContainerWidget *parent=0) | |
Creates a push button with given label text. | |
void | setDefault (bool enabled) |
Sets the default property. More... | |
bool | isDefault () const |
Returns whether the button is a default button. More... | |
void | setCheckable (bool checkable) |
Sets whether the button is checkable. More... | |
bool | isCheckable () const |
Returns whether a button is checkable. More... | |
void | setChecked (bool checked) |
Sets the button state. More... | |
void | setChecked () |
Checks the button. More... | |
void | setUnChecked () |
Unchecks the button. More... | |
bool | isChecked () const |
Returns the button state. More... | |
bool | setText (const WString &text) |
Sets the button text. More... | |
const WString & | text () const |
Returns the button text. More... | |
bool | setTextFormat (TextFormat format) |
Sets the text format. More... | |
TextFormat | textFormat () const |
Returns the text format. More... | |
void | setIcon (const WLink &link) |
Sets an icon. More... | |
WLink | icon () const |
Returns the icon. More... | |
void | setLink (const WLink &link) |
Sets a destination link. More... | |
const WLink & | link () const |
Returns the destination link. More... | |
void | setRef (const std::string &url) |
Sets a destination URL (deprecated). More... | |
std::string | ref () const |
Returns the destination URL (deprecated). More... | |
void | setResource (WResource *resource) |
Sets a destination resource (deprecated). More... | |
WResource * | resource () const |
Returns the destination resource (deprecated). More... | |
virtual WString | valueText () const |
Returns the current value. More... | |
virtual void | setValueText (const WString &value) |
Sets the current value. More... | |
void | setLinkTarget (AnchorTarget target) |
Sets the link target. More... | |
AnchorTarget | linkTarget () const |
Returns the location where the linked content should be displayed. More... | |
void | setMenu (WPopupMenu *menu) |
Links a popup menu to the button. More... | |
WPopupMenu * | menu () const |
Returns an associated popup menu. More... | |
virtual void | refresh () |
Refresh the widget. More... | |
EventSignal & | checked () |
Signal emitted when the button gets checked. More... | |
EventSignal & | unChecked () |
Signal emitted when the button gets unchecked. More... | |
virtual bool | setFirstFocus () |
Set focus on the widget's first descendant. More... | |
Public Member Functions inherited from Wt::WFormWidget | |
WFormWidget (WContainerWidget *parent=0) | |
Creates a WFormWidget with an optional parent. | |
~WFormWidget () | |
Destructor. More... | |
WLabel * | label () const |
Returns the label associated with this widget. More... | |
virtual void | setHidden (bool hidden, const WAnimation &animation=WAnimation()) |
Sets the hidden state of this widget. More... | |
void | setValidator (WValidator *validator) |
Sets a validator for this field. More... | |
virtual WValidator * | validator () const |
Returns the validator. | |
virtual WValidator::State | validate () |
Validates the field. More... | |
void | setEnabled (bool enabled) |
Sets whether the widget is enabled. More... | |
virtual void | setReadOnly (bool readOnly) |
Sets the element read-only. More... | |
bool | isReadOnly () const |
Returns whether the form element is read-only. More... | |
void | setEmptyText (const WString &emptyText) |
Sets the placeholder text (deprecated). More... | |
const WString & | emptyText () const |
Returns the placeholder text (deprecated). More... | |
virtual void | setPlaceholderText (const WString &placeholder) |
Sets the placeholder text. More... | |
const WString & | placeholderText () const |
Returns the placeholder text. More... | |
EventSignal & | changed () |
Signal emitted when the value was changed. More... | |
EventSignal & | selected () |
Signal emitted when ?? | |
Signal< WValidator::Result > & | validated () |
Signal emitted when the widget is being validated. More... | |
virtual void | setToolTip (const WString &text, TextFormat textFormat=PlainText) |
Sets a tooltip. More... | |
virtual bool | canReceiveFocus () const |
Returns whether the widget can receive focus. More... | |
virtual int | tabIndex () const |
Returns the tab index. More... | |
Public Member Functions inherited from Wt::WInteractWidget | |
WInteractWidget (WContainerWidget *parent=0) | |
Create an InteractWidget with optional parent. | |
EventSignal< WKeyEvent > & | keyWentDown () |
Event signal emitted when a keyboard key is pushed down. More... | |
EventSignal< WKeyEvent > & | keyPressed () |
Event signal emitted when a "character" was entered. More... | |
EventSignal< WKeyEvent > & | keyWentUp () |
Event signal emitted when a keyboard key is released. More... | |
EventSignal & | enterPressed () |
Event signal emitted when enter was pressed. More... | |
EventSignal & | escapePressed () |
Event signal emitted when escape was pressed. More... | |
EventSignal< WMouseEvent > & | clicked () |
Event signal emitted when a mouse key was clicked on this widget. More... | |
EventSignal< WMouseEvent > & | doubleClicked () |
Event signal emitted when a mouse key was double clicked on this widget. More... | |
EventSignal< WMouseEvent > & | mouseWentDown () |
Event signal emitted when a mouse key was pushed down on this widget. More... | |
EventSignal< WMouseEvent > & | mouseWentUp () |
Event signal emitted when a mouse key was released on this widget. More... | |
EventSignal< WMouseEvent > & | mouseWentOut () |
Event signal emitted when the mouse went out of this widget. More... | |
EventSignal< WMouseEvent > & | mouseWentOver () |
Event signal emitted when the mouse entered this widget. More... | |
EventSignal< WMouseEvent > & | mouseMoved () |
Event signal emitted when the mouse moved over this widget. More... | |
EventSignal< WMouseEvent > & | mouseDragged () |
Event signal emitted when the mouse is dragged over this widget. More... | |
EventSignal< WMouseEvent > & | mouseWheel () |
Event signal emitted when the mouse scroll wheel was used. More... | |
EventSignal< WTouchEvent > & | touchStarted () |
Event signal emitted when a finger is placed on the screen. More... | |
EventSignal< WTouchEvent > & | touchEnded () |
Event signal emitted when a finger is removed from the screen. More... | |
EventSignal< WTouchEvent > & | touchMoved () |
Event signal emitted when a finger, which is already placed on the screen, is moved across the screen. More... | |
EventSignal< WGestureEvent > & | gestureStarted () |
Event signal emitted when a gesture is started. More... | |
EventSignal< WGestureEvent > & | gestureChanged () |
Event signal emitted when a gesture is changed. More... | |
EventSignal< WGestureEvent > & | gestureEnded () |
Event signal emitted when a gesture is ended. More... | |
void | setDraggable (const std::string &mimeType, WWidget *dragWidget=0, bool isDragWidgetOnly=false, WObject *sourceWidget=0) |
Configure dragging for drag and drop. More... | |
void | unsetDraggable () |
Disable drag & drop for this widget. More... | |
void | setMouseOverDelay (int delay) |
Sets a delay for the mouse over event. More... | |
int | mouseOverDelay () const |
Returns the mouse over signal delay. More... | |
virtual void | setPopup (bool popup) |
Lets the widget overlay over other sibling widgets. More... | |
virtual void | load () |
Loads content just before the widget is used. More... | |
virtual bool | isEnabled () const |
Returns whether the widget is enabled. More... | |
Public Member Functions inherited from Wt::WWebWidget | |
WWebWidget (WContainerWidget *parent=0) | |
Construct a WebWidget with a given parent. More... | |
virtual void | setPositionScheme (PositionScheme scheme) |
Sets the CSS position scheme. More... | |
virtual PositionScheme | positionScheme () const |
Returns the CSS position scheme. More... | |
virtual void | setOffsets (const WLength &offset, WFlags< Side > sides=All) |
Sets CSS offsets for a non-statically positioned widget. More... | |
virtual WLength | offset (Side s) const |
Returns a CSS offset. More... | |
virtual void | resize (const WLength &width, const WLength &height) |
Resizes the widget. More... | |
virtual WLength | width () const |
Returns the width. More... | |
virtual WLength | height () const |
Returns the height. More... | |
virtual void | setMinimumSize (const WLength &width, const WLength &height) |
Sets a minimum size. More... | |
virtual WLength | minimumWidth () const |
Returns the minimum width. More... | |
virtual WLength | minimumHeight () const |
Returns the minimum height. More... | |
virtual void | setMaximumSize (const WLength &width, const WLength &height) |
Sets a maximum size. More... | |
virtual WLength | maximumWidth () const |
Returns the maximum width. More... | |
virtual WLength | maximumHeight () const |
Returns the maximum height. More... | |
virtual void | setLineHeight (const WLength &height) |
Sets the CSS line height for contained text. | |
virtual WLength | lineHeight () const |
Returns the CSS line height for contained text. More... | |
virtual void | setFloatSide (Side s) |
Specifies a CSS float side. More... | |
virtual Side | floatSide () const |
Returns the CSS float side. More... | |
virtual void | setClearSides (WFlags< Side > sides) |
Sets the sides that should be cleared of floats. More... | |
virtual WFlags< Side > | clearSides () const |
Returns the sides that should remain empty. More... | |
virtual void | setMargin (const WLength &margin, WFlags< Side > sides=All) |
Sets CSS margins around the widget. More... | |
virtual WLength | margin (Side side) const |
Returns a CSS margin set. More... | |
virtual void | setHiddenKeepsGeometry (bool enabled) |
Sets whether the widget keeps its geometry when hidden. More... | |
virtual bool | hiddenKeepsGeometry () const |
Returns whether the widget keeps its geometry when hidden. More... | |
virtual bool | isHidden () const |
Returns whether the widget is set hidden. More... | |
virtual bool | isVisible () const |
Returns whether the widget is visible. More... | |
virtual void | setDisabled (bool disabled) |
Sets whether the widget is disabled. More... | |
virtual bool | isDisabled () const |
Returns whether the widget is set disabled. More... | |
virtual bool | isPopup () const |
Returns whether the widget is overlayed. More... | |
virtual void | setInline (bool isInline) |
Sets whether the widget is displayed inline or as a block. More... | |
virtual bool | isInline () const |
Returns whether the widget is displayed inline or as block. More... | |
virtual void | setDecorationStyle (const WCssDecorationStyle &style) |
Sets a CSS decoration style. More... | |
virtual WCssDecorationStyle & | decorationStyle () |
Returns the decoration style of this widget. More... | |
virtual void | setStyleClass (const WString &styleClass) |
Sets (one or more) CSS style classes. More... | |
virtual WString | styleClass () const |
Returns the CSS style class. More... | |
virtual void | addStyleClass (const WString &styleClass, bool force=false) |
Adds a CSS style class. More... | |
virtual void | removeStyleClass (const WString &styleClass, bool force=false) |
Removes a CSS style class. More... | |
virtual bool | hasStyleClass (const WString &styleClass) const |
Returns whether the widget has a style class. | |
virtual void | setVerticalAlignment (AlignmentFlag alignment, const WLength &length=WLength()) |
Sets the vertical alignment. More... | |
virtual AlignmentFlag | verticalAlignment () const |
Returns the vertical alignment. More... | |
virtual WLength | verticalAlignmentLength () const |
Returns the fixed vertical alignment that was set. More... | |
virtual void | setDeferredToolTip (bool enable, TextFormat textFormat=PlainText) |
Enable deferred tooltip. More... | |
virtual WString | toolTip () const |
Returns the tooltip. | |
virtual void | setAttributeValue (const std::string &name, const WString &value) |
Sets an attribute value. More... | |
virtual WString | attributeValue (const std::string &name) const |
Returns an attribute value. More... | |
virtual void | setJavaScriptMember (const std::string &name, const std::string &value) |
Sets a JavaScript member. More... | |
virtual std::string | javaScriptMember (const std::string &name) const |
Returns the value of a JavaScript member. More... | |
virtual void | callJavaScriptMember (const std::string &name, const std::string &args) |
Calls a JavaScript member. More... | |
virtual bool | loaded () const |
Returns whether this widget has been loaded. More... | |
virtual void | setId (const std::string &id) |
Sets the CSS Id. More... | |
virtual WWidget * | find (const std::string &name) |
Finds a descendent widget by name. More... | |
virtual WWidget * | findById (const std::string &id) |
Finds a descendent widget by id. | |
virtual void | setSelectable (bool selectable) |
Sets as selectable. More... | |
virtual void | doJavaScript (const std::string &javascript) |
Executes the given JavaScript statements when the widget is rendered or updated. More... | |
virtual const std::string | id () const |
Returns the (unique) identifier for this object. More... | |
void | setLoadLaterWhenInvisible (bool) |
Change the way the widget is loaded when invisible. More... | |
std::string | htmlTagName () const |
returns the current html tag name More... | |
void | setHtmlTagName (const std::string &tag) |
set the custom HTML tag name More... | |
const std::vector< WWidget * > & | children () const |
Returns contained widgets. More... | |
Signal & | childrenChanged () |
Signal emitted when children have been added or removed. More... | |
virtual void | setCanReceiveFocus (bool enabled) |
Sets whether the widget can receive focus. More... | |
virtual void | setFocus (bool focus) |
Sets focus. More... | |
virtual bool | hasFocus () const |
Returns whether the widget currently has the focus. | |
virtual void | setTabIndex (int index) |
Sets the tab index. More... | |
EventSignal & | blurred () |
Signal emitted when the widget lost focus. More... | |
EventSignal & | focussed () |
Signal emitted when the widget recieved focus. More... | |
virtual bool | scrollVisibilityEnabled () const WT_CXX11ONLY(finaloverride) |
Returns whether scroll visibility detection is enabled for this widget. More... | |
virtual void | setScrollVisibilityEnabled (bool enabled) WT_CXX11ONLY(finaloverride) |
Sets whether scroll visibility detection is enabled for this widget. More... | |
virtual int | scrollVisibilityMargin () const WT_CXX11ONLY(finaloverride) |
Returns the margin around the viewport within which the widget is considered visible. More... | |
virtual void | setScrollVisibilityMargin (int margin) WT_CXX11ONLY(finaloverride) |
Sets the margin around the viewport within which the widget is considered visible. More... | |
virtual Signal< bool > & | scrollVisibilityChanged () WT_CXX11ONLY(finaloverride) |
Signal triggered when the scroll visibility of this widget changes. More... | |
virtual bool | isScrollVisible () const WT_CXX11ONLY(finaloverride) |
Returns whether this widget is currently considered scroll visible. More... | |
virtual void | setThemeStyleEnabled (bool enabled) |
Sets whether theme styling for a widget is enabled or disabled. More... | |
virtual bool | isThemeStyleEnabled () const |
Returns whether this widget is currently styled by the chosen theme. More... | |
Public Member Functions inherited from Wt::WWidget | |
virtual | ~WWidget () |
Destructor. More... | |
WWidget * | parent () const |
Returns the parent widget. More... | |
virtual void | removeChild (WObject *child) |
Removes a child object. More... | |
void | setWidth (const WLength &width) |
Sets the width. More... | |
void | setHeight (const WLength &height) |
Sets the height. More... | |
virtual void | positionAt (const WWidget *widget, Orientation orientation=Vertical) |
Positions a widget next to another widget. More... | |
virtual void | toggleStyleClass (const WString &styleClass, bool add, bool force=false) |
Toggles a CSS style class. | |
std::string | jsRef () const |
Returns a JavaScript expression to the corresponding DOM node. More... | |
void | setFocus () |
Sets focus. More... | |
virtual void | acceptDrops (const std::string &mimeType, const WString &hoverStyleClass=WString()) |
Sets a mime type to be accepted for dropping. More... | |
virtual void | stopAcceptDrops (const std::string &mimeType) |
Indicates that a mime type is no longer accepted for dropping. More... | |
virtual void | setObjectName (const std::string &name) |
Sets an object name. More... | |
virtual void | htmlText (std::ostream &out) |
Streams the (X)HTML representation. More... | |
bool | isRendered () const |
Returns whether the widget is rendered. More... | |
void | hide () |
Hides the widget. More... | |
void | animateHide (const WAnimation &animation) |
Hides the widget using an animation. More... | |
void | show () |
Shows the widget. More... | |
void | animateShow (const WAnimation &animation) |
Shows the widget using an animation. More... | |
void | enable () |
Enables the widget. More... | |
void | disable () |
Disable thes widget. More... | |
bool | layoutSizeAware () const |
Returns whether the widget is layout size aware. More... | |
Public Member Functions inherited from Wt::WObject | |
WObject (WObject *parent=0) | |
Create a WObject with a given parent object. More... | |
virtual | ~WObject () |
Destructor. More... | |
virtual std::string | objectName () const |
Returns the object name. More... | |
void | resetLearnedSlots () |
Resets learned stateless slot implementations. More... | |
template<class T > | |
void | resetLearnedSlot (void(T::*method)()) |
Resets a learned stateless slot implementation. More... | |
template<class T > | |
WStatelessSlot * | implementStateless (void(T::*method)()) |
Declares a slot to be stateless and learn client-side behaviour on first invocation. More... | |
template<class T > | |
WStatelessSlot * | implementStateless (void(T::*method)(), void(T::*undoMethod)()) |
Declares a slot to be stateless and learn client-side behaviour in advance. More... | |
void | isNotStateless () |
Marks the current function as not stateless. More... | |
template<class T > | |
WStatelessSlot * | implementJavaScript (void(T::*method)(), const std::string &jsCode) |
Provides a JavaScript implementation for a method. More... | |
void | addChild (WObject *child) |
Adds a child object. More... | |
const std::vector< WObject * > & | children () const |
Returns the children. | |
WObject * | parent () const |
Returns the parent object. | |
Protected Member Functions | |
virtual void | propagateSetEnabled (bool enabled) |
Propagates that a widget was enabled or disabled through children. More... | |
virtual void | enableAjax () |
Progresses to an Ajax-enabled widget. More... | |
Protected Member Functions inherited from Wt::WFormWidget | |
virtual void | render (WFlags< RenderFlag > flags) |
Renders the widget. More... | |
Protected Member Functions inherited from Wt::WWebWidget | |
virtual WStatelessSlot * | getStateless (Method method) |
On-demand stateless slot implementation. More... | |
Protected Member Functions inherited from Wt::WWidget | |
void | setLayoutSizeAware (bool sizeAware) |
Sets the widget to be aware of its size set by a layout manager. More... | |
virtual void | layoutSizeChanged (int width, int height) |
Virtual method that indicates a size change. More... | |
WWidget (WContainerWidget *parent=0) | |
Creates a widget. More... | |
virtual void | dropEvent (WDropEvent dropEvent) |
Handles a drop event. More... | |
virtual int | boxPadding (Orientation orientation) const |
Returns the widget's built-in padding. More... | |
virtual int | boxBorder (Orientation orientation) const |
Returns the widget's built-in border width. More... | |
void | scheduleRender (WFlags< RepaintFlag > flags=0) |
Schedules rerendering of the widget. More... | |
Additional Inherited Members | |
Public Types inherited from Wt::WObject | |
typedef void(WObject::* | Method) () |
Typedef for a WObject method without arguments. | |
Static Public Member Functions inherited from Wt::WWebWidget | |
static WString | escapeText (const WString &text, bool newlinesToo=false) |
Escape HTML control characters in the text, to display literally (deprecated). More... | |
static std::string & | escapeText (std::string &text, bool newlinestoo=false) |
Escape HTML control characters in the text, to display literally (deprecated). More... | |
static bool | removeScript (WString &text) |
Remove tags/attributes from text that are not passive (deprecated). More... | |
static std::string | jsStringLiteral (const std::string &v, char delimiter= '\'') |
Turn a UTF8 encoded string into a JavaScript string literal. More... | |
Static Public Member Functions inherited from Wt::WWidget | |
static WString | tr (const char *key) |
Short hand for WString::tr() More... | |
Static Protected Member Functions inherited from Wt::WObject | |
static WObject * | sender () |
Returns the sender of the current slot call. More... | |
A widget that represents a push button.
To act on a button click, connect a slot to the clicked() signal.
Usage example:
WPushButton is an inline widget.
The widget corresponds to the HTML <button>
tag (with some exceptions in the bootstrap theme).
Wt::WPushButton::WPushButton | ( | const WString & | text, |
WContainerWidget * | parent = 0 |
||
) |
Creates a push button with given label text.
The default text format is PlainText.
EventSignal & Wt::WPushButton::checked | ( | ) |
Signal emitted when the button gets checked.
This signal is emitted when the user checks the button.
You can use the clicked() signal to react to any change of the button state.
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protectedvirtual |
Progresses to an Ajax-enabled widget.
This method is called when the progressive bootstrap method is used, and support for AJAX has been detected. The default behavior will upgrade the widget's event handling to use AJAX instead of full page reloads, and propagate the call to its children.
You may want to reimplement this method if you want to make changes to widget when AJAX is enabled. You should always call the base implementation.
Reimplemented from Wt::WFormWidget.
bool Wt::WPushButton::isCheckable | ( | ) | const |
Returns whether a button is checkable.
bool Wt::WPushButton::isChecked | ( | ) | const |
Returns the button state.
bool Wt::WPushButton::isDefault | ( | ) | const |
Returns whether the button is a default button.
AnchorTarget Wt::WPushButton::linkTarget | ( | ) | const |
Returns the location where the linked content should be displayed.
WPopupMenu* Wt::WPushButton::menu | ( | ) | const |
Returns an associated popup menu.
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protectedvirtual |
Propagates that a widget was enabled or disabled through children.
When enabling or disabling a widget, you usually also want to disable contained children. This method is called by setDisabled() to propagate its state to all children.
You may want to reimplement this method if they wish to render differently when a widget is disabled. The default implementation will propagate the signal to all children.
Reimplemented from Wt::WFormWidget.
std::string Wt::WPushButton::ref | ( | ) | const |
Returns the destination URL (deprecated).
When the button refers to a resource, the current resource URL is returned. Otherwise, the URL is returned that was set using setRef().
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virtual |
Refresh the widget.
The refresh method is invoked when the locale is changed using WApplication::setLocale() or when the user hit the refresh button.
The widget must actualize its contents in response.
Reimplemented from Wt::WFormWidget.
WResource* Wt::WPushButton::resource | ( | ) | const |
Returns the destination resource (deprecated).
Returns 0
if no resource has been set.
void Wt::WPushButton::setCheckable | ( | bool | checkable | ) |
Sets whether the button is checkable.
A checkable button can be checked and unchecked, and clicking will toggle between these two states.
void Wt::WPushButton::setChecked | ( | bool | checked | ) |
Sets the button state.
This is ignored for a button which is not checkable.
This method does not emit one of the checked() or unChecked() signals.
void Wt::WPushButton::setChecked | ( | ) |
void Wt::WPushButton::setDefault | ( | bool | enabled | ) |
Sets the default property.
This has only a functional meaning for a button in a dialog footer, as it becomes associated with pressing 'enter' in the dialog.
A default button may be rendered in a different style, depending on the theme.
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virtual |
Set focus on the widget's first descendant.
Set focus on the widget itself, or on a first descendant which can receive focus.
Returns whether focus could be set.
Reimplemented from Wt::WWebWidget.
void Wt::WPushButton::setIcon | ( | const WLink & | link | ) |
Sets an icon.
The icon is placed to the left of the text.
void Wt::WPushButton::setLink | ( | const WLink & | link | ) |
Sets a destination link.
This method can be used to make the button behave like a WAnchor (or conversely, an anchor look like a button) and redirect to another URL when clicked.
The link
may be to a URL, a resource, or an internal path.
By default, a button does not link to an URL and you should listen to the clicked() signal to react to a click event.
void Wt::WPushButton::setLinkTarget | ( | AnchorTarget | target | ) |
Sets the link target.
This sets the target where the linked contents should be displayed. The default target is TargetSelf.
void Wt::WPushButton::setMenu | ( | WPopupMenu * | menu | ) |
Links a popup menu to the button.
When the button is clicked, the linked popup menu is shown.
void Wt::WPushButton::setRef | ( | const std::string & | url | ) |
Sets a destination URL (deprecated).
void Wt::WPushButton::setResource | ( | WResource * | resource | ) |
Sets a destination resource (deprecated).
This method can be used to make the button behave like a WAnchor (or conversely, an anchor look like a button) and redirect to another resource when clicked.
A resource specifies application-dependent content, which may be generated by your application on demand.
This sets the resource
as the destination of the button, and is an alternative to setRef(). The resource may be cleared by passing resource
= 0
.
The button does not assume ownership of the resource.
bool Wt::WPushButton::setText | ( | const WString & | text | ) |
Sets the button text.
The default text format is Wt::PlainText.
When the current text format is Wt::XHTMLText, and text
is literal (not created using WString::tr()), it is parsed using an XML parser which discards malicious tags and attributes silently. When the parser encounters an XML parse error, the textFormat is changed to Wt::PlainText.
Returns whether the text could be set using the current textFormat. A return value of false
indicates that the text format was changed in order to be able to accept the new text.
bool Wt::WPushButton::setTextFormat | ( | TextFormat | format | ) |
Sets the text format.
The textFormat controls how the string should be interpreted: either as plain text, which is displayed literally, or as XHTML-markup.
When changing the textFormat to Wt::XHTMLText, and the current text is literal (not created using WString::tr()), the current text is parsed using an XML parser which discards malicious tags and attributes silently. When the parser encounters an XML parse error, the textFormat is left unchanged, and this method returns false.
Returns whether the textFormat could be set for the current text.
The default format is Wt::PlainText.
void Wt::WPushButton::setUnChecked | ( | ) |
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virtual |
TextFormat Wt::WPushButton::textFormat | ( | ) | const |
Returns the text format.
EventSignal & Wt::WPushButton::unChecked | ( | ) |
Signal emitted when the button gets unchecked.
This signal is emitted when the user unchecks the button.
You can use the clicked() signal to react to any change of the button state.
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virtual |
Returns the current value.
Returns an empty string, since a button has no value.
Implements Wt::WFormWidget.