Wt  3.3.9
Public Member Functions | List of all members
Wt::Ext::ProgressDialog Class Reference

A standard dialog to inform the user of progress during a time consuming task. More...

#include <Wt/Ext/ProgressDialog>

Inheritance diagram for Wt::Ext::ProgressDialog:
Inheritance graph
[legend]

Public Member Functions

 ProgressDialog (bool i18n=false)
 Create a new progress dialog. More...
 
 ProgressDialog (const WString &text, const WString &cancelButtonText, int minimum, int maximum, bool i18n=false)
 Create a new progress dialog. More...
 
void setMinimum (int minimum)
 Set the minimum value.
 
int minimum () const
 Return the minimum value.
 
void setMaximum (int maximum)
 Set the maximum value.
 
int maximum () const
 Return the maximum value.
 
void setRange (int minimum, int maximum)
 Define the range.
 
void cancel ()
 Cancel the dialog. More...
 
void reset ()
 Reset the dialog. More...
 
void setCancelButtonText (const WString &text)
 Set the text used for the cancel button.
 
void setValue (int progress)
 Set the current value (in the range from minimum() to maximum()).
 
int value () const
 Return the current value.
 
bool wasCanceled () const
 Return if the progress dialog was cancelled. More...
 
Signalcanceled ()
 Signal emitted when the user cancels the dialog. More...
 
- Public Member Functions inherited from Wt::Ext::MessageBox
 MessageBox (bool i18n=false)
 Create an empty message box. More...
 
 MessageBox (const WString &caption, const WString &text, Icon icon, WFlags< StandardButton > buttons, bool i18n=false)
 Create a message box with given caption, text, icon, and buttons. More...
 
void setText (const WString &text)
 Set the text for the message box.
 
const WStringtext () const
 Get the message box text.
 
void setIcon (Icon icon)
 Set the icon.
 
Icon icon () const
 Get the icon.
 
void setButtons (WFlags< StandardButton > buttons)
 Set standard buttons for the message box.
 
WFlags< StandardButtonbuttons () const
 Get the standard buttons.
 
StandardButton result ()
 Get the result of this message box. More...
 
void enablePrompt (bool enable)
 Show a single-line input field. More...
 
bool hasPrompt () const
 Return if the messagebox may show a prompt. More...
 
void enableTextArea (bool enable)
 Show a multi-line input field. More...
 
bool hasTextArea () const
 Return if the messagebox may show a prompt. More...
 
void setValue (const WString &value)
 Set the value in the input field. More...
 
const WStringvalue () const
 Get the value of the input field. More...
 
Signal< StandardButton > & buttonClicked ()
 Signal emitted when a button is clicked.
 
virtual void setHidden (bool hidden, const WAnimation &animation=WAnimation())
 Show or hide the message box.
 
virtual void refresh ()
 Refresh the widget. More...
 
- Public Member Functions inherited from Wt::Ext::Dialog
 Dialog (const WString &windowTitle=WString())
 Construct a Dialog with a given window title. More...
 
 ~Dialog ()
 Destruct a Dialog.
 
void setWindowTitle (const WString &windowTitle)
 Set the dialog window title. More...
 
const WStringwindowTitle () const
 Return the dialog window title. More...
 
WContainerWidgetcontents () const
 Return the dialog contents container. More...
 
DialogCode exec ()
 Execute the dialog in a recursive event loop. More...
 
virtual void done (DialogCode r)
 Stop a recursive event loop. More...
 
virtual void accept ()
 Stop a recursive event loop with result Accepted. More...
 
virtual void reject ()
 Stop a recursive event loop with result Rejected. More...
 
Signal< DialogCode > & finished ()
 Signal emitted when the recursive event loop is ended. More...
 
DialogCode result () const
 Return the result that was set for this dialog. More...
 
void addButton (Button *button)
 Add a button at the bottom of this dialog. More...
 
void removeButton (Button *button)
 Remove a button from the bottom of this dialog. More...
 
const std::vector< Button * > & buttons () const
 Return the list of buttons at the bottom of this dialog. More...
 
void setDefaultButton (Button *button)
 Configure a default button for this dialog. More...
 
ButtondefaultButton () const
 Return the default button for this dialog. More...
 
void setSizeGripEnabled (bool enabled)
 Configure a size grip to allow the user to resize this dialog. More...
 
bool isSizeGripEnabled () const
 Return if the size grip is enabled. More...
 
- Public Member Functions inherited from Wt::Ext::Panel
 Panel (WContainerWidget *parent=0)
 Create a new panel. More...
 
 ~Panel ()
 Destruct a panel.
 
void setTopToolBar (ToolBar *toolBar)
 Set a tool bar at the top of the panel. More...
 
ToolBartopToolBar () const
 Return the top tool bar. More...
 
void setBottomToolBar (ToolBar *bottomBar)
 Set a tool bar at the bottom of the panel. More...
 
ToolBarbottomToolBar () const
 Return the top tool bar. More...
 
void addFooterButton (Button *button)
 Add a button to the footer of the panel. More...
 
void removeFooterButton (Button *button)
 Remove a button from the footer of the panel. More...
 
const std::vector< Button * > & footerButtons () const
 Retrn the list of footer buttons. More...
 
void setTitle (const WString &title)
 Set a title. More...
 
const WStringtitle () const
 Get the title. More...
 
void setTitleBar (bool enable)
 Show or hide a title bar for the panel. More...
 
bool titleBar () const
 Get the title bar. More...
 
void setAnimate (bool on)
 Set to use animations for the expand/collapse operation. More...
 
bool animate () const
 Return if using animations for expand/collapse. More...
 
void setAutoScrollBars (bool on)
 Option to show scroll bars when needed. More...
 
bool autoScrollBars () const
 Return if showing scroll bars when needed. More...
 
void setBorder (bool show)
 Change the border around the panel. More...
 
bool border () const
 Get the border setting. More...
 
void setCollapsed (bool on)
 Set the panel expanded or callapsed. More...
 
void collapse ()
 Collapse the panel. More...
 
void expand ()
 Expand the panel. More...
 
bool isCollapsed () const
 Return if the panel is collapsed. More...
 
void setCollapsible (bool on)
 Allow the user to collapse/expand the panel. More...
 
bool isCollapsible () const
 Return if the user may collapse/expand the panel. More...
 
void setResizable (bool on)
 Allow the user to resize the panel. More...
 
bool isResizable () const
 Return if the user may resize the panel. More...
 
JSignalcollapsed ()
 Signal emitted when the panel is collapsed. More...
 
JSignalexpanded ()
 Signal emitted when the panel is expanded. More...
 
- Public Member Functions inherited from Wt::Ext::Container
 Container (WContainerWidget *parent=0)
 Create a new container. More...
 
virtual ~Container ()
 Destroy the container.
 
void setLayout (WLayout *layout)
 Set a layout manager for the container. More...
 
WLayoutlayout ()
 Get the layout manager that was set for the container. More...
 
- Public Member Functions inherited from Wt::Ext::Component
void setEnabled (bool how)
 Enables or disables the widget. More...
 
void enable ()
 Enables the widget.
 
void disable ()
 Disables the widget.
 
- Public Member Functions inherited from Wt::Ext::Widget
 ~Widget ()
 Delete a widget.
 
- 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< SideclearSides () 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 isEnabled () const
 Returns whether the widget is enabled. More...
 
virtual void setPopup (bool popup)
 Lets the widget overlay over other sibling widgets. 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 WCssDecorationStyledecorationStyle ()
 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 setToolTip (const WString &text, TextFormat textFormat=PlainText)
 Sets a tooltip. 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 void load ()
 Loads content just before the widget is used. 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 WWidgetfind (const std::string &name)
 Finds a descendent widget by name. More...
 
virtual WWidgetfindById (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...
 
SignalchildrenChanged ()
 Signal emitted when children have been added or removed. More...
 
virtual void setCanReceiveFocus (bool enabled)
 Sets whether the widget can receive focus. More...
 
virtual bool canReceiveFocus () const
 Returns whether the widget can receive focus. More...
 
virtual bool setFirstFocus ()
 Set focus on the widget's first descendant. 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...
 
virtual int tabIndex () const
 Returns the tab index. More...
 
EventSignalblurred ()
 Signal emitted when the widget lost focus. More...
 
EventSignalfocussed ()
 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...
 
WWidgetparent () 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.
 
WObjectparent () const
 Returns the parent object.
 

Additional Inherited Members

- Public Types inherited from Wt::Ext::Dialog
- Public Types inherited from Wt::WObject
typedef void(WObject::* Method) ()
 Typedef for a WObject method without arguments.
 
- Static Public Member Functions inherited from Wt::Ext::MessageBox
static StandardButton show (const WString &caption, const WString &text, WFlags< StandardButton > buttons, bool i18n=false)
 Convenience method to show a message box, blocking the current thread. More...
 
static StandardButton prompt (const WString &caption, const WString &text, WString &value, bool multiLine=false, bool i18n=false)
 Convenience method to show a message box prompting for input, blocking the current thread. More...
 
- 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...
 
- Protected Member Functions inherited from Wt::Ext::Component
virtual void propagateSetEnabled (bool enabled)
 Propagates that a widget was enabled or disabled through children. More...
 
- Protected Member Functions inherited from Wt::WWebWidget
virtual void enableAjax ()
 Progresses to an Ajax-enabled widget. More...
 
virtual WStatelessSlot * getStateless (Method method)
 On-demand stateless slot implementation. More...
 
virtual void render (WFlags< RenderFlag > flags)
 Renders the widget. 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...
 
- Static Protected Member Functions inherited from Wt::WObject
static WObjectsender ()
 Returns the sender of the current slot call. More...
 

Detailed Description

A standard dialog to inform the user of progress during a time consuming task.

A progress bar is shown to show progress from minimum() to maximum(), with the current value within (this range) set using setValue(). When the user cancels the dialog, the dialog is hidden and the canceled() signal is emitted.

The progress dialog may be used in two ways.

The easiest way is using a code snippet like this:

Wt::Ext::ProgressDialog progress("Converting contact details...", "Cancel", 0, contacts_.size());
progress.setWindowTitle("Import Contacts");
for (unsigned i = 0; i < contacts_.size(); ++i) {
progress.setValue(i);
if (!progress.wasCanceled()) {
convertContactDetails(contacts_[i]);
} else {
Wt::Ext::MessageBox::show("Operation cancelled",
"You may import your contact details any time later.", Ok);
break;
}
}

Using this approach, WApplication::processEvents() is used to synchronize the server and client state. This approach has the drawback that browser interactivity is limited.

The more involved approach involves the use of WTimer to update the progress in conjunction with a worker thread to do the actual work.

ExtProgressDialog-1.png
Example of a ProgressDialog

Constructor & Destructor Documentation

Wt::Ext::ProgressDialog::ProgressDialog ( bool  i18n = false)

Create a new progress dialog.

Creates a new dialog, with window title 'Progress...', no message, and a Cancel button. The progress range is defined from 0 to 100.

Wt::Ext::ProgressDialog::ProgressDialog ( const WString text,
const WString cancelButtonText,
int  minimum,
int  maximum,
bool  i18n = false 
)

Create a new progress dialog.

Creates a new dialog, with window title 'Progress...', the given message, and a Cancel button. The progress range is defined from minimum to maximum

Member Function Documentation

void Wt::Ext::ProgressDialog::cancel ( )

Cancel the dialog.

Sets the state to cancelled, and hides the dialog. Calling this method does not emit the canceled signal.

Signal& Wt::Ext::ProgressDialog::canceled ( )

Signal emitted when the user cancels the dialog.

When the user cancels the dialog, the dialog is hidden, and the state is set to being cancelled.

See also
wasCanceled()
void Wt::Ext::ProgressDialog::reset ( )

Reset the dialog.

The value is reset to the minimum(), and the cancelled state is cleared.

bool Wt::Ext::ProgressDialog::wasCanceled ( ) const

Return if the progress dialog was cancelled.

See also
canceled, cancel()

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