A specialized treeview that supports a custom drop event. More...

#include <FolderView.h>

Inheritance diagram for FolderView:

[legend]

Public Member Functions
	FolderView (Wt::WContainerWidget *parent=0)
	Constructor. More...

Public Member Functions inherited from Wt::WTreeView
	WTreeView (WContainerWidget *parent=0)

void	setColumnFormat (int column, const WString &format)

WString	columnFormat (int column) const

void	setExpanded (const WModelIndex &, bool expanded)

bool	isExpanded (const WModelIndex &index) const

void	collapse (const WModelIndex &index)

void	expand (const WModelIndex &index)

void	expandToDepth (int depth)

void	setRootIsDecorated (bool show)

bool	rootIsDecorated () const

virtual void	resize (const WLength &width, const WLength &height)

Signal< WModelIndex > &	collapsed ()

Signal< WModelIndex > &	expanded ()

virtual WWidget *	itemWidget (const WModelIndex &index) const

virtual void	setModel (WAbstractItemModel *model)

virtual void	setColumnWidth (int column, const WLength &width)

virtual void	setAlternatingRowColors (bool enable)

virtual void	setRowHeight (const WLength &rowHeight)

virtual void	setHeaderHeight (const WLength &height)

virtual void	setColumnHidden (int column, bool hidden)

virtual void	setRowHeaderCount (int count)

virtual int	pageCount () const

virtual int	pageSize () const

virtual int	currentPage () const

virtual void	setCurrentPage (int page)

virtual void	scrollTo (const WModelIndex &index, ScrollHint hint=EnsureVisible)

virtual EventSignal< WScrollEvent > &	scrolled ()

Public Member Functions inherited from Wt::WAbstractItemView
WAbstractItemModel *	model () const

void	setRootIndex (const WModelIndex &rootIndex)

const WModelIndex &	rootIndex () const

void	setItemDelegate (WAbstractItemDelegate *delegate)

WAbstractItemDelegate *	itemDelegate () const

void	setItemDelegateForColumn (int column, WAbstractItemDelegate *delegate)

WAbstractItemDelegate *	itemDelegateForColumn (int column) const

WAbstractItemDelegate *	itemDelegate (const WModelIndex &index) const

WAbstractItemDelegate *	itemDelegate (int column) const

void	setHeaderItemDelegate (WAbstractItemDelegate *delegate)

WAbstractItemDelegate *	headerItemDelegate () const

virtual void	setColumnAlignment (int column, AlignmentFlag alignment)

virtual AlignmentFlag	columnAlignment (int column) const

virtual void	setHeaderAlignment (int column, WFlags< AlignmentFlag > alignment)

AlignmentFlag	headerAlignment (int column) const

AlignmentFlag	horizontalHeaderAlignment (int column) const

AlignmentFlag	verticalHeaderAlignment (int column) const

void	setHeaderWordWrap (int column, bool enabled)

virtual bool	alternatingRowColors () const

void	sortByColumn (int column, SortOrder order)

int	sortColumn () const

SortOrder	sortOrder () const

void	setSortingEnabled (bool enabled)

void	setSortingEnabled (int column, bool enabled)

bool	isSortingEnabled () const

bool	isSortingEnabled (int column) const

void	setColumnResizeEnabled (bool enabled)

bool	isColumnResizeEnabled () const

void	setSelectionBehavior (SelectionBehavior behavior)

SelectionBehavior	selectionBehavior () const

void	setSelectionMode (SelectionMode mode)

SelectionMode	selectionMode () const

WItemSelectionModel *	selectionModel () const

void	setSelectedIndexes (const WModelIndexSet &indexes)

void	clearSelection ()

void	select (const WModelIndex &index, SelectionFlag option=Select)

bool	isSelected (const WModelIndex &index) const

WModelIndexSet	selectedIndexes () const

void	setDragEnabled (bool enable)

void	setDropsEnabled (bool enable)

const WLength &	rowHeight () const

WLength	columnWidth (int column) const

bool	isColumnHidden (int column) const

void	hideColumn (int column)

void	showColumn (int column)

virtual void	setColumnBorder (const WColor &color)

void	setHeaderHeight (const WLength &height, bool multiLine)

const WLength &	headerHeight () const

void	setEditTriggers (WFlags< EditTrigger > editTriggers)

WFlags< EditTrigger >	editTriggers () const

void	setEditOptions (WFlags< EditOption > options)

WFlags< EditOption >	editOptions () const

void	edit (const WModelIndex &index)

void	closeEditor (const WModelIndex &index, bool saveData=true)

void	closeEditors (bool saveData=true)

WValidator::State	validateEditor (const WModelIndex &index)

WValidator::State	validateEditors ()

bool	isEditing (const WModelIndex &index) const

bool	isValid (const WModelIndex &index) const

Signal< WModelIndex, WMouseEvent > &	clicked ()

Signal< WModelIndex, WMouseEvent > &	doubleClicked ()

Signal< WModelIndex, WMouseEvent > &	mouseWentDown ()

Signal< WModelIndex, WMouseEvent > &	mouseWentUp ()

Signal< WModelIndex, WTouchEvent > &	touchStart ()

Signal &	selectionChanged ()

Signal &	pageChanged ()

Signal< int, WLength > &	columnResized ()

bool	sortEnabled ()

void	setHeaderClickSortEnabled (bool enabled)

Signal< int, WMouseEvent > &	headerClicked ()

Signal< int, WMouseEvent > &	headerDoubleClicked ()

Signal< int, WMouseEvent > &	headerMouseWentDown ()

Signal< int, WMouseEvent > &	headerMouseWentUp ()

int	rowHeaderCount () const

void	setColumn1Fixed (bool enable)

bool	column1Fixed () const

virtual void	setObjectName (const std::string &name)

EventSignal< WKeyEvent > &	keyWentDown ()

EventSignal< WKeyEvent > &	keyPressed ()

EventSignal< WKeyEvent > &	keyWentUp ()

Public Member Functions inherited from Wt::WCompositeWidget
	WCompositeWidget (WContainerWidget *parent=0)

	WCompositeWidget (WWidget implementation, WContainerWidget parent)

virtual std::string	objectName () const

virtual const std::string	id () const

virtual void	setPositionScheme (PositionScheme scheme)

virtual PositionScheme	positionScheme () const

virtual void	setOffsets (const WLength &offset, WFlags< Side > sides=All)

virtual WLength	offset (Side s) const

virtual WLength	width () const

virtual WLength	height () const

virtual void	setMinimumSize (const WLength &width, const WLength &height)

virtual WLength	minimumWidth () const

virtual WLength	minimumHeight () const

virtual void	setMaximumSize (const WLength &width, const WLength &height)

virtual WLength	maximumWidth () const

virtual WLength	maximumHeight () const

virtual void	setLineHeight (const WLength &height)

virtual WLength	lineHeight () const

virtual void	setFloatSide (Side s)

virtual Side	floatSide () const

virtual void	setClearSides (WFlags< Side > sides)

virtual WFlags< Side >	clearSides () const

virtual void	setMargin (const WLength &margin, WFlags< Side > sides=All)

virtual WLength	margin (Side side) const

virtual void	setHiddenKeepsGeometry (bool enabled)

virtual bool	hiddenKeepsGeometry () const

virtual void	setHidden (bool hidden, const WAnimation &animation=WAnimation())

virtual bool	isHidden () const

virtual bool	isVisible () const

virtual void	setDisabled (bool disabled)

virtual bool	isDisabled () const

virtual bool	isEnabled () const

virtual void	setPopup (bool popup)

virtual bool	isPopup () const

virtual void	setInline (bool isInline)

virtual bool	isInline () const

virtual void	setDecorationStyle (const WCssDecorationStyle &style)

virtual WCssDecorationStyle &	decorationStyle ()

virtual void	setStyleClass (const WString &styleClass)

virtual WString	styleClass () const

virtual void	addStyleClass (const WString &styleClass, bool force=false)

virtual void	removeStyleClass (const WString &styleClass, bool force=false)

virtual bool	hasStyleClass (const WString &styleClass) const

virtual void	setVerticalAlignment (AlignmentFlag alignment, const WLength &length=WLength::Auto)

virtual AlignmentFlag	verticalAlignment () const

virtual WLength	verticalAlignmentLength () const

virtual void	setToolTip (const WString &text, TextFormat textFormat=PlainText)

virtual WString	toolTip () const

virtual void	setDeferredToolTip (bool enable, TextFormat textFormat=PlainText)

virtual void	refresh ()

virtual void	setAttributeValue (const std::string &name, const WString &value)

virtual WString	attributeValue (const std::string &name) const

virtual void	setJavaScriptMember (const std::string &name, const std::string &value)

virtual std::string	javaScriptMember (const std::string &name) const

virtual void	callJavaScriptMember (const std::string &name, const std::string &args)

virtual void	load ()

virtual bool	loaded () const

virtual void	setCanReceiveFocus (bool enabled)

virtual bool	canReceiveFocus () const

virtual void	setFocus (bool focus)

virtual bool	setFirstFocus ()

virtual bool	hasFocus () const

virtual void	setTabIndex (int index)

virtual int	tabIndex () const

virtual void	setId (const std::string &id)

virtual WWidget *	find (const std::string &name)

virtual WWidget *	findById (const std::string &name)

virtual void	setSelectable (bool selectable)

virtual void	doJavaScript (const std::string &js)

virtual void	propagateSetEnabled (bool enabled)

virtual bool	scrollVisibilityEnabled () const WT_CXX11ONLY(finaloverride)

virtual void	setScrollVisibilityEnabled (bool enabled) WT_CXX11ONLY(finaloverride)

virtual int	scrollVisibilityMargin () const WT_CXX11ONLY(finaloverride)

virtual void	setScrollVisibilityMargin (int margin) WT_CXX11ONLY(finaloverride)

virtual Signal< bool > &	scrollVisibilityChanged () WT_CXX11ONLY(finaloverride)

virtual bool	isScrollVisible () const WT_CXX11ONLY(finaloverride)

virtual void	setThemeStyleEnabled (bool enabled)

virtual bool	isThemeStyleEnabled () const

Public Member Functions inherited from Wt::WWidget
virtual	~WWidget ()

WWidget *	parent () const

virtual void	removeChild (WObject *child)

void	setWidth (const WLength &width)

void	setHeight (const WLength &height)

virtual void	positionAt (const WWidget *widget, Orientation orientation=Vertical)

virtual void	toggleStyleClass (const WString &styleClass, bool add, bool force=false)

std::string	jsRef () const

void	setFocus ()

virtual void	acceptDrops (const std::string &mimeType, const WString &hoverStyleClass=WString())

virtual void	stopAcceptDrops (const std::string &mimeType)

virtual void	htmlText (std::ostream &out)

bool	isRendered () const

void	hide ()

void	animateHide (const WAnimation &animation)

void	show ()

void	animateShow (const WAnimation &animation)

void	enable ()

void	disable ()

bool	layoutSizeAware () const

Public Member Functions inherited from Wt::WObject
	WObject (WObject *parent=0)

virtual	~WObject ()

void	resetLearnedSlots ()

void	resetLearnedSlot (void(T::*method)())

WStatelessSlot *	implementStateless (void(T::*method)())

WStatelessSlot *	implementStateless (void(T::method)(), void(T::undoMethod)())

void	isNotStateless ()

WStatelessSlot *	implementJavaScript (void(T::*method)(), const std::string &jsCode)

void	addChild (WObject *child)

const std::vector< WObject * > &	children () const

WObject *	parent () const

Static Public Attributes
static const char *	FileSelectionMimeType = "application/x-computers-selection"
	Constant that indicates the mime type for a selection of files. More...

Protected Member Functions
virtual void	dropEvent (const Wt::WDropEvent &event, const Wt::WModelIndex &target)
	Drop event. More...

Protected Member Functions inherited from Wt::WTreeView
virtual void	render (WFlags< RenderFlag > flags)

virtual void	enableAjax ()

Protected Member Functions inherited from Wt::WAbstractItemView
	WAbstractItemView (WContainerWidget *parent=0)

virtual WWidget *	createExtraHeaderWidget (int column)

WWidget *	extraHeaderWidget (int column)

virtual WWidget *	createPageNavigationBar ()

virtual void	handleClick (const WModelIndex &index, const WMouseEvent &event)

virtual void	handleDoubleClick (const WModelIndex &index, const WMouseEvent &event)

virtual void	handleMouseDown (const WModelIndex &index, const WMouseEvent &event)

virtual void	handleMouseUp (const WModelIndex &index, const WMouseEvent &event)

virtual void	handleTouchStart (const std::vector< WModelIndex > &indices, const WTouchEvent &event)

Protected Member Functions inherited from Wt::WCompositeWidget
void	setImplementation (WWidget *widget)

WWidget *	implementation ()

virtual int	boxPadding (Orientation orientation) const

virtual int	boxBorder (Orientation orientation) const

Protected Member Functions inherited from Wt::WWidget
void	setLayoutSizeAware (bool sizeAware)

virtual void	layoutSizeChanged (int width, int height)

	WWidget (WContainerWidget *parent=0)

virtual void	dropEvent (WDropEvent dropEvent)

void	scheduleRender (WFlags< RepaintFlag > flags=0)

virtual WStatelessSlot *	getStateless (Method method)

Additional Inherited Members
Public Types inherited from Wt::WAbstractItemView
enum	EditTrigger

enum	EditOption

enum	ScrollHint

Public Types inherited from Wt::WObject
typedef void(WObject::*	Method) ()

Static Public Member Functions inherited from Wt::WWidget
static WString	tr (const char *key)

Public Attributes inherited from Wt::WAbstractItemView
	NoEditTrigger

	SingleClicked

	DoubleClicked

	SelectedClicked

	SingleEditor

	MultipleEditors

	SaveWhenClosed

	LeaveEditorsOpen

	EnsureVisible

	PositionAtTop

	PositionAtBottom

	PositionAtCenter

Static Protected Member Functions inherited from Wt::WObject
static WObject *	sender ()

Detailed Description

A specialized treeview that supports a custom drop event.

Definition at line 19 of file FolderView.h.

Constructor & Destructor Documentation

FolderView::FolderView ( Wt::WContainerWidget * parent = 0 )

Constructor.

Definition at line 19 of file FolderView.C.

   : WTreeView(parent)
 {
   /*
    * Accept drops for the custom mime type.
    */
   acceptDrops(FileSelectionMimeType);
 }

Member Function Documentation

void FolderView::dropEvent	(	const Wt::WDropEvent &	event,
		const Wt::WModelIndex &	target
	)

protectedvirtual

Drop event.

Reimplemented from Wt::WAbstractItemView.

Definition at line 28 of file FolderView.C.

 {
   /*
    * We reimplement the drop event to handle the dropping of a
    * selection of computers.
    *
    * The test below would always be true in this case, since we only
    * indicated support for that particular mime type.
    */
   if (event.mimeType() == FileSelectionMimeType) {
     /*
      * The source object for a drag of a selection from a WTreeView is
      * a WItemSelectionModel.
      */
     WItemSelectionModel *selection
       = dynamic_cast<WItemSelectionModel *>(event.source());
 
 #ifdef WT_THREADED
     int result = WMessageBox::show
       ("Drop event",
        "Move "
        + boost::lexical_cast<std::string>(selection->selectedIndexes().size())
        + " files to folder '"
        + boost::any_cast<WString>(target.data(DisplayRole)).toUTF8()
        + "' ?",
        Yes | No);
 #else
     int result = Yes;
 #endif
 
     if (result == Yes) {
       /*
        * You can access the source model from the selection and
        * manipulate it.
        */
       WAbstractItemModel *sourceModel = selection->model();
 
       WModelIndexSet toChange = selection->selectedIndexes();
 
       for (WModelIndexSet::reverse_iterator i = toChange.rbegin();
            i != toChange.rend(); ++i) {
         WModelIndex index = *i;
 
         /*
          * Copy target folder to file. Since we are using a
          * dynamic WSortFilterProxyModel that filters on folder, this
          * will also result in the removal of the file from the
          * current view.
          */
         std::map<int, boost::any> data = model()->itemData(target);
         data[DecorationRole] = index.data(DecorationRole);
         sourceModel->setItemData(index, data);
       }
     }
   }
 }

Member Data Documentation

const char * FolderView::FileSelectionMimeType = "application/x-computers-selection"

static

Constant that indicates the mime type for a selection of files.

Every kind of dragged data should be identified using a unique mime type.

Definition at line 26 of file FolderView.h.

The documentation for this class was generated from the following files:

/home/roel/project/wt/public-git/wt/examples/treeview-dragdrop/FolderView.h
/home/roel/project/wt/public-git/wt/examples/treeview-dragdrop/FolderView.C

Public Member Functions

Static Public Attributes

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation