Wt examples  3.3.8
Public Member Functions | Private Member Functions | Private Attributes | List of all members
TreeViewDragDrop Class Reference
Drag and drop in WTreeView example

Main application class. More...

Inheritance diagram for TreeViewDragDrop:
Inheritance graph
[legend]

Public Member Functions

 TreeViewDragDrop (const WEnvironment &env)
 Constructor. More...
 
virtual ~TreeViewDragDrop ()
 
- Public Member Functions inherited from Wt::WApplication
 WApplication (const WEnvironment &environment)
 
 ~WApplication ()
 
const WEnvironment & environment () const
 
WContainerWidget * root () const
 
WWidget * findWidget (const std::string &name)
 
void setTitle (const WString &title)
 
const WString & title () const
 
const WString & closeMessage () const
 
WLocalizedStrings * localizedStrings ()
 
void setLocalizedStrings (WLocalizedStrings *stringResolver)
 
WMessageResourceBundle & messageResourceBundle ()
 
void setLocale (const WLocale &locale)
 
const WLocale & locale () const
 
virtual void refresh ()
 
void bindWidget (WWidget *widget, const std::string &domId)
 
std::string docRoot () const
 
void setConnectionMonitor (const std::string &jsObject)
 
std::string sessionId () const
 
void changeSessionId ()
 
void processEvents ()
 
virtual void waitForEvent ()
 
void setAjaxMethod (AjaxMethod method)
 
AjaxMethod ajaxMethod () const
 
virtual void initialize ()
 
virtual void finalize ()
 
void setTwoPhaseRenderingThreshold (int size)
 
void setCookie (const std::string &name, const std::string &value, int maxAge, const std::string &domain="", const std::string &path="", bool secure=false)
 
void removeCookie (const std::string &name, const std::string &domain="", const std::string &path="")
 
void addMetaLink (const std::string &href, const std::string &rel, const std::string &media, const std::string &hreflang, const std::string &type, const std::string &sizes, bool disabled)
 
void removeMetaLink (const std::string &href)
 
void addMetaHeader (const std::string &name, const WString &content, const std::string &lang="")
 
void addMetaHeader (MetaHeaderType type, const std::string &name, const WString &content, const std::string &lang="")
 
WString metaHeader (MetaHeaderType type, const std::string &name) const
 
void removeMetaHeader (MetaHeaderType type, const std::string &name="")
 
WLogEntry log (const std::string &type) const
 
void setLoadingIndicator (WLoadingIndicator *indicator)
 
WLoadingIndicator * loadingIndicator () const
 
void quit ()
 
void quit (const WString &restartMessage)
 
bool isQuited () const
 
bool hasQuit () const
 
::int64_t maximumRequestSize () const
 
Signal< ::int64_t > & requestTooLarge ()
 
void setConfirmCloseMessage (const WString &message)
 
void enableInternalPaths ()
 
void deferRendering ()
 
void resumeRendering ()
 
boost::function< void()> bind (const F &f)
 
std::string encodeUntrustedUrl (const std::string &url) const
 
void pushExposedConstraint (WWidget *w)
 
WCssStyleSheet & styleSheet ()
 
void useStyleSheet (const WLink &link, const std::string &media="all")
 
void useStyleSheet (const WLink &link, const std::string &condition, const std::string &media)
 
void useStyleSheet (const WCssStyleSheet &styleSheet, const std::string &condition="")
 
void removeStyleSheet (const WLink &link)
 
void setTheme (const WTheme *theme)
 
const WTheme * theme () const
 
void setCssTheme (const std::string &name)
 
void setLayoutDirection (LayoutDirection direction)
 
LayoutDirection layoutDirection () const
 
void setBodyClass (const std::string &styleClass)
 
std::string bodyClass () const
 
void setHtmlClass (const std::string &styleClass)
 
std::string htmlClass () const
 
std::string url (const std::string &internalPath=std::string()) const
 
virtual std::string makeAbsoluteUrl (const std::string &url) const
 
std::string resolveRelativeUrl (const std::string &url) const
 
std::string bookmarkUrl () const
 
std::string bookmarkUrl (const std::string &internalPath) const
 
void setInternalPath (const std::string &path, bool emitChange=false)
 
void setInternalPathDefaultValid (bool valid)
 
bool internalPathDefaultValid () const
 
void setInternalPathValid (bool valid)
 
bool internalPathValid () const
 
std::string internalPath () const
 
std::string internalPathNextPart (const std::string &path) const
 
std::string internalSubPath (const std::string &path) const
 
bool internalPathMatches (const std::string &path) const
 
Signal< std::string > & internalPathChanged ()
 
Signal< std::string > & internalPathInvalid ()
 
void redirect (const std::string &url)
 
void enableUpdates (bool enabled=true)
 
bool updatesEnabled () const
 
void triggerUpdate ()
 
UpdateLock getUpdateLock ()
 
void attachThread (bool attach=true)
 
void doJavaScript (const std::string &javascript, bool afterLoaded=true)
 
void addAutoJavaScript (const std::string &javascript)
 
void declareJavaScriptFunction (const std::string &name, const std::string &function)
 
bool require (const std::string &url, const std::string &symbol=std::string())
 
bool requireJQuery (const std::string &url)
 
bool customJQuery () const
 
void setJavaScriptClass (const std::string &className)
 
std::string javaScriptClass ()
 
EventSignal< WKeyEvent > & globalKeyWentDown ()
 
EventSignal< WKeyEvent > & globalKeyPressed ()
 
EventSignal< WKeyEvent > & globalKeyWentUp ()
 
EventSignal & globalEnterPressed ()
 
EventSignal & globalEscapePressed ()
 
WCssStyleSheet & styleSheet ()
 
void useStyleSheet (const WLink &link, const std::string &media="all")
 
void useStyleSheet (const WLink &link, const std::string &condition, const std::string &media)
 
void useStyleSheet (const WCssStyleSheet &styleSheet, const std::string &condition="")
 
void removeStyleSheet (const WLink &link)
 
void setTheme (const WTheme *theme)
 
const WTheme * theme () const
 
void setCssTheme (const std::string &name)
 
void setLayoutDirection (LayoutDirection direction)
 
LayoutDirection layoutDirection () const
 
void setBodyClass (const std::string &styleClass)
 
std::string bodyClass () const
 
void setHtmlClass (const std::string &styleClass)
 
std::string htmlClass () const
 
std::string url (const std::string &internalPath=std::string()) const
 
virtual std::string makeAbsoluteUrl (const std::string &url) const
 
std::string resolveRelativeUrl (const std::string &url) const
 
std::string bookmarkUrl () const
 
std::string bookmarkUrl (const std::string &internalPath) const
 
void setInternalPath (const std::string &path, bool emitChange=false)
 
void setInternalPathDefaultValid (bool valid)
 
bool internalPathDefaultValid () const
 
void setInternalPathValid (bool valid)
 
bool internalPathValid () const
 
std::string internalPath () const
 
std::string internalPathNextPart (const std::string &path) const
 
std::string internalSubPath (const std::string &path) const
 
bool internalPathMatches (const std::string &path) const
 
Signal< std::string > & internalPathChanged ()
 
Signal< std::string > & internalPathInvalid ()
 
void redirect (const std::string &url)
 
void enableUpdates (bool enabled=true)
 
bool updatesEnabled () const
 
void triggerUpdate ()
 
UpdateLock getUpdateLock ()
 
void attachThread (bool attach=true)
 
void doJavaScript (const std::string &javascript, bool afterLoaded=true)
 
void addAutoJavaScript (const std::string &javascript)
 
void declareJavaScriptFunction (const std::string &name, const std::string &function)
 
bool require (const std::string &url, const std::string &symbol=std::string())
 
bool requireJQuery (const std::string &url)
 
bool customJQuery () const
 
void setJavaScriptClass (const std::string &className)
 
std::string javaScriptClass ()
 
EventSignal< WKeyEvent > & globalKeyWentDown ()
 
EventSignal< WKeyEvent > & globalKeyPressed ()
 
EventSignal< WKeyEvent > & globalKeyWentUp ()
 
EventSignal & globalEnterPressed ()
 
EventSignal & globalEscapePressed ()
 
- Public Member Functions inherited from Wt::WObject
 WObject (WObject *parent=0)
 
virtual ~WObject ()
 
virtual const std::string id () const
 
virtual void setObjectName (const std::string &name)
 
virtual std::string objectName () const
 
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)
 
virtual void removeChild (WObject *child)
 
const std::vector< WObject * > & children () const
 
WObject * parent () const
 

Private Member Functions

void createUI ()
 Setup the user interface. More...
 
WText * createTitle (const WString &title)
 Creates a title widget. More...
 
WTreeView * folderView ()
 Creates the folder WTreeView. More...
 
WTableView * fileView ()
 Creates the file table view (a WTableView) More...
 
void editFile (const WModelIndex &item)
 Edit a particular row. More...
 
WWidget * pieChart ()
 Creates the chart. More...
 
WWidget * aboutDisplay ()
 Creates the hints text. More...
 
void folderChanged ()
 Change the filter on the file view when the selected folder changes. More...
 
void showPopup (const WModelIndex &item, const WMouseEvent &event)
 Show a popup for a folder item. More...
 
void popupAction ()
 Process the result of the popup menu. More...
 
void dialogDone ()
 Process the result of the message box. More...
 
void populateFiles ()
 Populate the files model. More...
 
void convertToDate (WStandardItem *item)
 Convert a string to a date. More...
 
void convertToNumber (WStandardItem *item)
 Convert a string to a number. More...
 
void populateFolders ()
 Populate the folders model. More...
 
WStandardItem * createFolderItem (const WString &location, const std::string &folderId=std::string())
 Create a folder item. More...
 

Private Attributes

WStandardItemModel * folderModel_
 The folder model (used by folderView_) More...
 
WStandardItemModel * fileModel_
 The file model (used by fileView_) More...
 
WSortFilterProxyModel * fileFilterModel_
 The sort filter proxy model that adapts fileModel_. More...
 
std::map< std::string, WString > folderNameMap_
 Maps folder id's to folder descriptions. More...
 
WTreeView * folderView_
 The folder view. More...
 
WTableView * fileView_
 The file view. More...
 
WPopupMenu * popup_
 Popup menu on the folder view. More...
 
WMessageBox * popupActionBox_
 Message box to confirm the poup menu action. More...
 

Additional Inherited Members

- Public Types inherited from Wt::WApplication
enum  AjaxMethod
 
typedef Wt::ApplicationCreator ApplicationCreator
 
typedef boost::function< WApplication *(const WEnvironment &)> ApplicationCreator
 
- Public Types inherited from Wt::WObject
typedef void(WObject::* Method) ()
 
- Static Public Member Functions inherited from Wt::WApplication
static WApplication * instance ()
 
static std::string resourcesUrl ()
 
static std::string relativeResourcesUrl ()
 
static std::string appRoot ()
 
static bool readConfigurationProperty (const std::string &name, std::string &value)
 
- Public Attributes inherited from Wt::WApplication
 XMLHttpRequest
 
 DynamicScriptTag
 
- Protected Member Functions inherited from Wt::WApplication
virtual void notify (const WEvent &e)
 
virtual bool isExposed (WWidget *w) const
 
virtual void enableAjax ()
 
virtual void unload ()
 
virtual void handleJavaScriptError (const std::string &errorText)
 
- Protected Member Functions inherited from Wt::WObject
virtual WStatelessSlot * getStateless (Method method)
 
- Static Protected Member Functions inherited from Wt::WObject
static WObject * sender ()
 

Detailed Description

Main application class.

Definition at line 237 of file TreeViewDragDrop.C.

Constructor & Destructor Documentation

TreeViewDragDrop::TreeViewDragDrop ( const WEnvironment &  env)
inline

Constructor.

Definition at line 242 of file TreeViewDragDrop.C.

243  : WApplication(env),
244  popup_(0),
245  popupActionBox_(0)
246  {
247  setCssTheme("polished");
248 
249  /*
250  * Create the data models.
251  */
252  folderModel_ = new WStandardItemModel(0, 1, this);
253  populateFolders();
254 
255  fileModel_ = new FileModel(this);
256  populateFiles();
257 
258  /*
259  The header items are also endered using an ItemDelegate, and thus
260  support other data, e.g.:
261 
262  fileModel_->setHeaderFlags(0, Horizontal, HeaderIsUserCheckable);
263  fileModel_->setHeaderData(0, Horizontal,
264  std::string("icons/file.gif"),
265  Wt::DecorationRole);
266  */
267  fileFilterModel_ = new WSortFilterProxyModel(this);
268  fileFilterModel_->setSourceModel(fileModel_);
269  fileFilterModel_->setDynamicSortFilter(true);
270  fileFilterModel_->setFilterKeyColumn(0);
271  fileFilterModel_->setFilterRole(UserRole);
272 
273  /*
274  * Setup the user interface.
275  */
276  createUI();
277  }
TreeViewDragDrop::folderModel_
WStandardItemModel * folderModel_
The folder model (used by folderView_)
Definition: TreeViewDragDrop.C:286
TreeViewDragDrop::popupActionBox_
WMessageBox * popupActionBox_
Message box to confirm the poup menu action.
Definition: TreeViewDragDrop.C:307
Wt::WSortFilterProxyModel::setFilterRole
void setFilterRole(int role)
UserRole
UserRole
TreeViewDragDrop::populateFiles
void populateFiles()
Populate the files model.
Definition: TreeViewDragDrop.C:560
Wt::WSortFilterProxyModel::setFilterKeyColumn
void setFilterKeyColumn(int column)
FileModel
A specialized standard item model which report a specific drag and drop mime type.
Definition: TreeViewDragDrop.C:51
TreeViewDragDrop::fileFilterModel_
WSortFilterProxyModel * fileFilterModel_
The sort filter proxy model that adapts fileModel_.
Definition: TreeViewDragDrop.C:292
TreeViewDragDrop::createUI
void createUI()
Setup the user interface.
Definition: TreeViewDragDrop.C:311
Wt::WSortFilterProxyModel::setDynamicSortFilter
void setDynamicSortFilter(bool enable)
TreeViewDragDrop::popup_
WPopupMenu * popup_
Popup menu on the folder view.
Definition: TreeViewDragDrop.C:304
TreeViewDragDrop::populateFolders
void populateFolders()
Populate the folders model.
Definition: TreeViewDragDrop.C:602
Wt::WSortFilterProxyModel::setSourceModel
virtual void setSourceModel(WAbstractItemModel *sourceModel)
Wt::WApplication::setCssTheme
void setCssTheme(const std::string &name)
Wt::WApplication::WApplication
WApplication(const WEnvironment &environment)
TreeViewDragDrop::fileModel_
WStandardItemModel * fileModel_
The file model (used by fileView_)
Definition: TreeViewDragDrop.C:289
virtual TreeViewDragDrop::~TreeViewDragDrop ( )
inlinevirtual

Definition at line 279 of file TreeViewDragDrop.C.

279  {
280  delete popup_;
281  delete popupActionBox_;
282  }
TreeViewDragDrop::popupActionBox_
WMessageBox * popupActionBox_
Message box to confirm the poup menu action.
Definition: TreeViewDragDrop.C:307
TreeViewDragDrop::popup_
WPopupMenu * popup_
Popup menu on the folder view.
Definition: TreeViewDragDrop.C:304

Member Function Documentation

WWidget* TreeViewDragDrop::aboutDisplay ( )
inlineprivate

Creates the hints text.

Definition at line 457 of file TreeViewDragDrop.C.

457  {
458  WText *result = new WText(WString::tr("about-text"));
459  result->setStyleClass("about");
460  return result;
461  }
Wt::WWebWidget::setStyleClass
virtual void setStyleClass(const WString &styleClass)
void TreeViewDragDrop::convertToDate ( WStandardItem *  item)
inlineprivate

Convert a string to a date.

Definition at line 588 of file TreeViewDragDrop.C.

588  {
589  WDate d = WDate::fromString(item->text(), FileModel::dateEditFormat);
590  item->setData(boost::any(d), DisplayRole);
591  }
FileModel::dateEditFormat
static WString dateEditFormat
Date edit format.
Definition: TreeViewDragDrop.C:69
DisplayRole
DisplayRole
Wt::WStandardItem::setData
virtual void setData(const boost::any &data, int role=UserRole)
Wt::WStandardItem::text
WString text() const
void TreeViewDragDrop::convertToNumber ( WStandardItem *  item)
inlineprivate

Convert a string to a number.

Definition at line 595 of file TreeViewDragDrop.C.

595  {
596  int i = boost::lexical_cast<int>(item->text());
597  item->setData(boost::any(i), EditRole);
598  }
Wt::WStandardItem::setData
virtual void setData(const boost::any &data, int role=UserRole)
EditRole
EditRole
Wt::WStandardItem::text
WString text() const
WStandardItem* TreeViewDragDrop::createFolderItem ( const WString &  location,
const std::string &  folderId = std::string() 
)
inlineprivate

Create a folder item.

Configures flags for drag and drop support.

Definition at line 632 of file TreeViewDragDrop.C.

634  {
635  WStandardItem *result = new WStandardItem(location);
636 
637  if (!folderId.empty()) {
638  result->setData(boost::any(folderId));
639  result->setFlags(result->flags() | ItemIsDropEnabled);
640  folderNameMap_[folderId] = location;
641  } else
642  result->setFlags(result->flags().clear(ItemIsSelectable));
643 
644  result->setIcon("icons/folder.gif");
645 
646  return result;
647  }
ItemIsDropEnabled
ItemIsDropEnabled
TreeViewDragDrop::folderNameMap_
std::map< std::string, WString > folderNameMap_
Maps folder id&#39;s to folder descriptions.
Definition: TreeViewDragDrop.C:295
Wt::WStandardItem::setIcon
void setIcon(const std::string &uri)
WFlags< ItemFlag >::clear
WFlags< ItemFlag > & clear(ItemFlagvalue)
Wt::WStandardItem::setData
virtual void setData(const boost::any &data, int role=UserRole)
ItemIsSelectable
ItemIsSelectable
Wt::WStandardItem::setFlags
void setFlags(WFlags< ItemFlag > flags)
Wt::WStandardItem::flags
WFlags< ItemFlag > flags() const
WText* TreeViewDragDrop::createTitle ( const WString &  title)
inlineprivate

Creates a title widget.

Definition at line 347 of file TreeViewDragDrop.C.

347  {
348  WText *result = new WText(title);
349  result->setInline(false);
350  result->setStyleClass("title");
351 
352  return result;
353  }
Wt::WWebWidget::setInline
virtual void setInline(bool isInline)
Wt::WWebWidget::setStyleClass
virtual void setStyleClass(const WString &styleClass)
void TreeViewDragDrop::createUI ( )
inlineprivate

Setup the user interface.

Definition at line 311 of file TreeViewDragDrop.C.

311  {
312  WContainerWidget *w = root();
313  w->setStyleClass("maindiv");
314 
315  /*
316  * The main layout is a 3x2 grid layout.
317  */
318  WGridLayout *layout = new WGridLayout();
319  layout->addWidget(createTitle("Folders"), 0, 0);
320  layout->addWidget(createTitle("Files"), 0, 1);
321  layout->addWidget(folderView(), 1, 0);
322  layout->setColumnResizable(0);
323 
324  // select the first folder
325  folderView_->select(folderModel_->index(0, 0, folderModel_->index(0, 0)));
326 
327  WVBoxLayout *vbox = new WVBoxLayout();
328  vbox->addWidget(fileView(), 1);
329  vbox->addWidget(pieChart(), 1);
330  vbox->setResizable(0);
331 
332  layout->addLayout(vbox, 1, 1);
333 
334  layout->addWidget(aboutDisplay(), 2, 0, 1, 2);
335 
336  /*
337  * Let row 1 and column 1 take the excess space.
338  */
339  layout->setRowStretch(1, 1);
340  layout->setColumnStretch(1, 1);
341 
342  w->setLayout(layout);
343  }
TreeViewDragDrop::folderModel_
WStandardItemModel * folderModel_
The folder model (used by folderView_)
Definition: TreeViewDragDrop.C:286
Wt::WGridLayout::addLayout
void addLayout(WLayout *layout, int row, int column, WFlags< AlignmentFlag > alignment=0)
TreeViewDragDrop::fileView
WTableView * fileView()
Creates the file table view (a WTableView)
Definition: TreeViewDragDrop.C:386
Wt::WGridLayout::setColumnStretch
void setColumnStretch(int column, int stretch)
TreeViewDragDrop::pieChart
WWidget * pieChart()
Creates the chart.
Definition: TreeViewDragDrop.C:428
TreeViewDragDrop::folderView_
WTreeView * folderView_
The folder view.
Definition: TreeViewDragDrop.C:298
TreeViewDragDrop::aboutDisplay
WWidget * aboutDisplay()
Creates the hints text.
Definition: TreeViewDragDrop.C:457
Wt::WAbstractItemView::select
void select(const WModelIndex &index, SelectionFlag option=Select)
Wt::WWebWidget::setStyleClass
virtual void setStyleClass(const WString &styleClass)
Wt::WGridLayout::setColumnResizable
void setColumnResizable(int column, bool enabled=true, const WLength &initialSize=WLength::Auto)
Wt::WContainerWidget::setLayout
void setLayout(WLayout *layout)
Wt::WBoxLayout::setResizable
void setResizable(int index, bool enabled=true, const WLength &initialSize=WLength::Auto)
Wt::WAbstractItemModel::index
virtual WModelIndex index(int row, int column, const WModelIndex &parent=WModelIndex()) const =0
TreeViewDragDrop::folderView
WTreeView * folderView()
Creates the folder WTreeView.
Definition: TreeViewDragDrop.C:357
Wt::WGridLayout::setRowStretch
void setRowStretch(int row, int stretch)
Wt::WGridLayout::addWidget
void addWidget(WWidget *widget, int row, int column, WFlags< AlignmentFlag > alignment=0)
Wt::WBoxLayout::addWidget
void addWidget(WWidget *widget, int stretch=0, WFlags< AlignmentFlag > alignment=0)
Wt::WApplication::root
WContainerWidget * root() const
TreeViewDragDrop::createTitle
WText * createTitle(const WString &title)
Creates a title widget.
Definition: TreeViewDragDrop.C:347
void TreeViewDragDrop::dialogDone ( )
inlineprivate

Process the result of the message box.

Definition at line 548 of file TreeViewDragDrop.C.

548  {
549  delete popupActionBox_;
550  popupActionBox_ = 0;
551  }
TreeViewDragDrop::popupActionBox_
WMessageBox * popupActionBox_
Message box to confirm the poup menu action.
Definition: TreeViewDragDrop.C:307
void TreeViewDragDrop::editFile ( const WModelIndex &  item)
inlineprivate

Edit a particular row.

Definition at line 422 of file TreeViewDragDrop.C.

422  {
423  new FileEditDialog(fileView_->model(), item);
424  }
Wt::WAbstractItemView::model
WAbstractItemModel * model() const
FileEditDialog
A dialog for editing a &#39;file&#39;.
Definition: TreeViewDragDrop.C:78
TreeViewDragDrop::fileView_
WTableView * fileView_
The file view.
Definition: TreeViewDragDrop.C:301
WTableView* TreeViewDragDrop::fileView ( )
inlineprivate

Creates the file table view (a WTableView)

Definition at line 386 of file TreeViewDragDrop.C.

386  {
387  WTableView *tableView = new WTableView();
388 
389  tableView->setAlternatingRowColors(true);
390 
391  tableView->setModel(fileFilterModel_);
392  tableView->setSelectionMode(ExtendedSelection);
393  tableView->setDragEnabled(true);
394 
395  tableView->setColumnWidth(0, 100);
396  tableView->setColumnWidth(1, 150);
397  tableView->setColumnWidth(2, 100);
398  tableView->setColumnWidth(3, 60);
399  tableView->setColumnWidth(4, 100);
400  tableView->setColumnWidth(5, 100);
401 
402  WItemDelegate *delegate = new WItemDelegate(this);
403  delegate->setTextFormat(FileModel::dateDisplayFormat);
404  tableView->setItemDelegateForColumn(4, delegate);
405  tableView->setItemDelegateForColumn(5, delegate);
406 
407  tableView->setColumnAlignment(3, AlignRight);
408  tableView->setColumnAlignment(4, AlignRight);
409  tableView->setColumnAlignment(5, AlignRight);
410 
411  tableView->sortByColumn(1, AscendingOrder);
412 
413  tableView->doubleClicked().connect(this, &TreeViewDragDrop::editFile);
414 
415  fileView_ = tableView;
416 
417  return tableView;
418  }
Wt::WItemDelegate::setTextFormat
void setTextFormat(const WString &format)
FileModel::dateDisplayFormat
static WString dateDisplayFormat
Date display format.
Definition: TreeViewDragDrop.C:66
Wt::WTableView::setColumnWidth
virtual void setColumnWidth(int column, const WLength &width)
Wt::WAbstractItemView::setSelectionMode
void setSelectionMode(SelectionMode mode)
TreeViewDragDrop::fileFilterModel_
WSortFilterProxyModel * fileFilterModel_
The sort filter proxy model that adapts fileModel_.
Definition: TreeViewDragDrop.C:292
Wt::WAbstractItemView::setDragEnabled
void setDragEnabled(bool enable)
TreeViewDragDrop::editFile
void editFile(const WModelIndex &item)
Edit a particular row.
Definition: TreeViewDragDrop.C:422
AscendingOrder
AscendingOrder
Wt::WAbstractItemView::doubleClicked
Signal< WModelIndex, WMouseEvent > & doubleClicked()
Wt::WAbstractItemView::sortByColumn
void sortByColumn(int column, SortOrder order)
Wt::WTableView::setAlternatingRowColors
virtual void setAlternatingRowColors(bool enable)
Wt::WAbstractItemView::setItemDelegateForColumn
void setItemDelegateForColumn(int column, WAbstractItemDelegate *delegate)
TreeViewDragDrop::fileView_
WTableView * fileView_
The file view.
Definition: TreeViewDragDrop.C:301
Wt::WTableView::setModel
virtual void setModel(WAbstractItemModel *model)
Wt::WAbstractItemView::setColumnAlignment
virtual void setColumnAlignment(int column, AlignmentFlag alignment)
void TreeViewDragDrop::folderChanged ( )
inlineprivate

Change the filter on the file view when the selected folder changes.

Definition at line 466 of file TreeViewDragDrop.C.

466  {
467  if (folderView_->selectedIndexes().empty())
468  return;
469 
470  WModelIndex selected = *folderView_->selectedIndexes().begin();
471  boost::any d = selected.data(UserRole);
472  if (!d.empty()) {
473  std::string folder = boost::any_cast<std::string>(d);
474 
475  // For simplicity, we assume here that the folder-id does not
476  // contain special regexp characters, otherwise these need to be
477  // escaped -- or use the \Q \E qutoing escape regular expression
478  // syntax (and escape \E)
479  fileFilterModel_->setFilterRegExp(folder);
480  }
481  }
UserRole
UserRole
Wt::WAbstractItemView::selectedIndexes
WModelIndexSet selectedIndexes() const
TreeViewDragDrop::folderView_
WTreeView * folderView_
The folder view.
Definition: TreeViewDragDrop.C:298
TreeViewDragDrop::fileFilterModel_
WSortFilterProxyModel * fileFilterModel_
The sort filter proxy model that adapts fileModel_.
Definition: TreeViewDragDrop.C:292
Wt::WSortFilterProxyModel::setFilterRegExp
void setFilterRegExp(const WString &pattern)
Wt::WModelIndex::data
boost::any data(int role=DisplayRole) const
WTreeView* TreeViewDragDrop::folderView ( )
inlineprivate

Creates the folder WTreeView.

Definition at line 357 of file TreeViewDragDrop.C.

357  {
358  WTreeView *treeView = new FolderView();
359 
360  /*
361  * To support right-click, we need to disable the built-in browser
362  * context menu.
363  *
364  * Note that disabling the context menu and catching the
365  * right-click does not work reliably on all browsers.
366  */
367  treeView->setAttributeValue
368  ("oncontextmenu",
369  "event.cancelBubble = true; event.returnValue = false; return false;");
370  treeView->setModel(folderModel_);
371  treeView->resize(200, WLength::Auto);
372  treeView->setSelectionMode(SingleSelection);
373  treeView->expandToDepth(1);
374  treeView->selectionChanged()
375  .connect(this, &TreeViewDragDrop::folderChanged);
376 
377  treeView->mouseWentUp().connect(this, &TreeViewDragDrop::showPopup);
378 
379  folderView_ = treeView;
380 
381  return treeView;
382  }
TreeViewDragDrop::folderModel_
WStandardItemModel * folderModel_
The folder model (used by folderView_)
Definition: TreeViewDragDrop.C:286
Wt::WCompositeWidget::setAttributeValue
virtual void setAttributeValue(const std::string &name, const WString &value)
Wt::WTreeView::resize
virtual void resize(const WLength &width, const WLength &height)
TreeViewDragDrop::folderView_
WTreeView * folderView_
The folder view.
Definition: TreeViewDragDrop.C:298
Wt::WAbstractItemView::setSelectionMode
void setSelectionMode(SelectionMode mode)
FolderView
A specialized treeview that supports a custom drop event.
Definition: FolderView.h:19
Wt::WAbstractItemView::selectionChanged
Signal & selectionChanged()
TreeViewDragDrop::showPopup
void showPopup(const WModelIndex &item, const WMouseEvent &event)
Show a popup for a folder item.
Definition: TreeViewDragDrop.C:485
Wt::WTreeView::expandToDepth
void expandToDepth(int depth)
Wt::WTreeView::setModel
virtual void setModel(WAbstractItemModel *model)
Wt::WAbstractItemView::mouseWentUp
Signal< WModelIndex, WMouseEvent > & mouseWentUp()
Wt::Signal::connect
virtual Wt::Signals::connection connect(WObject *target, WObject::Method method)
TreeViewDragDrop::folderChanged
void folderChanged()
Change the filter on the file view when the selected folder changes.
Definition: TreeViewDragDrop.C:466
WWidget* TreeViewDragDrop::pieChart ( )
inlineprivate

Creates the chart.

Definition at line 428 of file TreeViewDragDrop.C.

428  {
429  using namespace Chart;
430 
431  WPieChart *chart = new WPieChart();
432  // chart->setPreferredMethod(WPaintedWidget::PngImage);
433  chart->setModel(fileFilterModel_);
434  chart->setTitle("File sizes");
435 
436  chart->setLabelsColumn(1); // Name
437  chart->setDataColumn(3); // Size
438 
439  chart->setPerspectiveEnabled(true, 0.2);
440  chart->setDisplayLabels(Outside | TextLabel);
441 
442  if (!WApplication::instance()->environment().ajax()) {
443  chart->resize(500, 200);
444  chart->setMargin(WLength::Auto, Left | Right);
445  WContainerWidget *w = new WContainerWidget();
446  w->addWidget(chart);
447  w->setStyleClass("about");
448  return w;
449  } else {
450  chart->setStyleClass("about");
451  return chart;
452  }
453  }
TextLabel
TextLabel
Wt::WWebWidget::setStyleClass
virtual void setStyleClass(const WString &styleClass)
TreeViewDragDrop::fileFilterModel_
WSortFilterProxyModel * fileFilterModel_
The sort filter proxy model that adapts fileModel_.
Definition: TreeViewDragDrop.C:292
Outside
Outside
Wt::WApplication::environment
const WEnvironment & environment() const
Wt::WContainerWidget::addWidget
virtual void addWidget(WWidget *widget)
void TreeViewDragDrop::populateFiles ( )
inlineprivate

Populate the files model.

Data (and headers) is read from the CSV file data/files.csv. We add icons to the first column, resolve the folder id to the actual folder name, and configure item flags, and parse date values.

Definition at line 560 of file TreeViewDragDrop.C.

560  {
561  fileModel_->invisibleRootItem()->setRowCount(0);
562 
563  std::ifstream f((appRoot() + "data/files.csv").c_str());
564 
565  if (!f)
566  throw std::runtime_error("Could not read: data/files.csv");
567 
568  readFromCsv(f, fileModel_);
569 
570  for (int i = 0; i < fileModel_->rowCount(); ++i) {
571  WStandardItem *item = fileModel_->item(i, 0);
572  item->setFlags(item->flags() | ItemIsDragEnabled);
573  item->setIcon("icons/file.gif");
574 
575  std::string folderId = item->text().toUTF8();
576 
577  item->setData(boost::any(folderId), UserRole);
578  item->setText(folderNameMap_[folderId]);
579 
580  convertToNumber(fileModel_->item(i, 3));
581  convertToDate(fileModel_->item(i, 4));
582  convertToDate(fileModel_->item(i, 5));
583  }
584  }
TreeViewDragDrop::convertToNumber
void convertToNumber(WStandardItem *item)
Convert a string to a number.
Definition: TreeViewDragDrop.C:595
TreeViewDragDrop::convertToDate
void convertToDate(WStandardItem *item)
Convert a string to a date.
Definition: TreeViewDragDrop.C:588
UserRole
UserRole
Wt::WStandardItem::setRowCount
void setRowCount(int rows)
Wt::WAbstractItemModel::rowCount
virtual int rowCount(const WModelIndex &parent=WModelIndex()) const =0
Wt::WStandardItemModel::invisibleRootItem
WStandardItem * invisibleRootItem() const
Wt::WString::toUTF8
std::string toUTF8() const
TreeViewDragDrop::folderNameMap_
std::map< std::string, WString > folderNameMap_
Maps folder id&#39;s to folder descriptions.
Definition: TreeViewDragDrop.C:295
Wt::WStandardItem::setIcon
void setIcon(const std::string &uri)
Wt::WStandardItem::setText
void setText(const WString &text)
Wt::WApplication::appRoot
static std::string appRoot()
Wt::WStandardItem::setData
virtual void setData(const boost::any &data, int role=UserRole)
Wt::WStandardItem::setFlags
void setFlags(WFlags< ItemFlag > flags)
Wt::WStandardItem::text
WString text() const
readFromCsv
void readFromCsv(std::istream &f, Wt::WAbstractItemModel *model, int numRows, bool firstLineIsHeaders)
Utility function that reads a model from a CSV file.
Definition: CsvUtil.C:56
Wt::WStandardItemModel::item
WStandardItem * item(int row, int column=0) const
TreeViewDragDrop::fileModel_
WStandardItemModel * fileModel_
The file model (used by fileView_)
Definition: TreeViewDragDrop.C:289
ItemIsDragEnabled
ItemIsDragEnabled
Wt::WStandardItem::flags
WFlags< ItemFlag > flags() const
void TreeViewDragDrop::populateFolders ( )
inlineprivate

Populate the folders model.

Definition at line 602 of file TreeViewDragDrop.C.

602  {
603  WStandardItem *level1, *level2;
604 
605  folderModel_->appendRow(level1 = createFolderItem("San Fransisco"));
606  level1->appendRow(level2 = createFolderItem("Investors", "sf-investors"));
607  level1->appendRow(level2 = createFolderItem("Fellows", "sf-fellows"));
608 
609  folderModel_->appendRow(level1 = createFolderItem("Sophia Antipolis"));
610  level1->appendRow(level2 = createFolderItem("R&D", "sa-r_d"));
611  level1->appendRow(level2 = createFolderItem("Services", "sa-services"));
612  level1->appendRow(level2 = createFolderItem("Support", "sa-support"));
613  level1->appendRow(level2 = createFolderItem("Billing", "sa-billing"));
614 
615  folderModel_->appendRow(level1 = createFolderItem("New York"));
616  level1->appendRow(level2 = createFolderItem("Marketing", "ny-marketing"));
617  level1->appendRow(level2 = createFolderItem("Sales", "ny-sales"));
618  level1->appendRow(level2 = createFolderItem("Advisors", "ny-advisors"));
619 
620  folderModel_->appendRow(level1 = createFolderItem
621  (WString::fromUTF8("Frankfürt")));
622  level1->appendRow(level2 = createFolderItem("Sales", "frank-sales"));
623 
624  folderModel_->setHeaderData(0, Horizontal,
625  boost::any(std::string("SandBox")));
626  }
TreeViewDragDrop::folderModel_
WStandardItemModel * folderModel_
The folder model (used by folderView_)
Definition: TreeViewDragDrop.C:286
TreeViewDragDrop::createFolderItem
WStandardItem * createFolderItem(const WString &location, const std::string &folderId=std::string())
Create a folder item.
Definition: TreeViewDragDrop.C:632
Wt::WStandardItem::appendRow
void appendRow(const std::vector< WStandardItem * > &items)
Wt::WAbstractItemModel::setHeaderData
virtual bool setHeaderData(int section, Orientation orientation, const boost::any &value, int role=EditRole)
Wt::WStandardItemModel::appendRow
void appendRow(const std::vector< WStandardItem * > &items)
void TreeViewDragDrop::popupAction ( )
inlineprivate

Process the result of the popup menu.

Definition at line 527 of file TreeViewDragDrop.C.

527  {
528  if (popup_->result()) {
529  /*
530  * You could also bind extra data to an item using setData() and
531  * check here for the action asked. For now, we just use the text.
532  */
533  WString text = popup_->result()->text();
534  popup_->hide();
535 
536  popupActionBox_ = new WMessageBox("Sorry.","Action '" + text
537  + "' is not implemented.", NoIcon, Ok);
538  popupActionBox_->buttonClicked()
539  .connect(this, &TreeViewDragDrop::dialogDone);
540  popupActionBox_->show();
541  } else {
542  popup_->hide();
543  }
544  }
Wt::WMenuItem::text
const WString & text() const
TreeViewDragDrop::popupActionBox_
WMessageBox * popupActionBox_
Message box to confirm the poup menu action.
Definition: TreeViewDragDrop.C:307
TreeViewDragDrop::dialogDone
void dialogDone()
Process the result of the message box.
Definition: TreeViewDragDrop.C:548
Wt::WMessageBox::show
static StandardButton show(const WString &caption, const WString &text, WFlags< StandardButton > buttons, const WAnimation &animation=WAnimation())
TreeViewDragDrop::popup_
WPopupMenu * popup_
Popup menu on the folder view.
Definition: TreeViewDragDrop.C:304
Wt::WPopupMenu::result
WMenuItem * result() const
Signal< StandardButton >::connect
virtual Wt::Signals::connection connect(WObject *target, WObject::Method method)
Wt::WMessageBox::buttonClicked
Signal< StandardButton > & buttonClicked()
void TreeViewDragDrop::showPopup ( const WModelIndex &  item,
const WMouseEvent &  event 
)
inlineprivate

Show a popup for a folder item.

Definition at line 485 of file TreeViewDragDrop.C.

485  {
486  if (event.button() == WMouseEvent::RightButton) {
487  // Select the item, it was not yet selected.
488  if (!folderView_->isSelected(item))
489  folderView_->select(item);
490 
491  if (!popup_) {
492  popup_ = new WPopupMenu();
493  popup_->addItem("icons/folder_new.gif", "Create a New Folder");
494  popup_->addItem("Rename this Folder")->setCheckable(true);
495  popup_->addItem("Delete this Folder");
496  popup_->addSeparator();
497  popup_->addItem("Folder Details");
498  popup_->addSeparator();
499  popup_->addItem("Application Inventory");
500  popup_->addItem("Hardware Inventory");
501  popup_->addSeparator();
502 
503  WPopupMenu *subMenu = new WPopupMenu();
504  subMenu->addItem("Sub Item 1");
505  subMenu->addItem("Sub Item 2");
506  popup_->addMenu("File Deployments", subMenu);
507 
508  /*
509  * This is one method of executing a popup, which does not block a
510  * thread for a reentrant event loop, and thus scales.
511  *
512  * Alternatively you could call WPopupMenu::exec(), which returns
513  * the result, but while waiting for it, blocks the thread.
514  */
515  popup_->aboutToHide().connect(this, &TreeViewDragDrop::popupAction);
516  }
517 
518  if (popup_->isHidden())
519  popup_->popup(event);
520  else
521  popup_->hide();
522  }
523  }
Wt::WMenu::addSeparator
WMenuItem * addSeparator()
Wt::WMouseEvent::button
Button button() const
Wt::WMenu::addItem
WMenuItem * addItem(const WString &label, WWidget *contents=0, WMenuItem::LoadPolicy policy=WMenuItem::LazyLoading)
Wt::WMenu::addMenu
WMenuItem * addMenu(const WString &text, WMenu *menu)
TreeViewDragDrop::folderView_
WTreeView * folderView_
The folder view.
Definition: TreeViewDragDrop.C:298
Wt::WAbstractItemView::select
void select(const WModelIndex &index, SelectionFlag option=Select)
Wt::WMenuItem::setCheckable
void setCheckable(bool checkable)
TreeViewDragDrop::popup_
WPopupMenu * popup_
Popup menu on the folder view.
Definition: TreeViewDragDrop.C:304
Wt::WPopupMenu::aboutToHide
Signal & aboutToHide()
TreeViewDragDrop::popupAction
void popupAction()
Process the result of the popup menu.
Definition: TreeViewDragDrop.C:527
Wt::WAbstractItemView::isSelected
bool isSelected(const WModelIndex &index) const
Wt::Signal::connect
virtual Wt::Signals::connection connect(WObject *target, WObject::Method method)
Wt::WPopupMenu::popup
void popup(const WPoint &point)
Wt::WCompositeWidget::isHidden
virtual bool isHidden() const

Member Data Documentation

WSortFilterProxyModel* TreeViewDragDrop::fileFilterModel_
private

The sort filter proxy model that adapts fileModel_.

Definition at line 292 of file TreeViewDragDrop.C.

WStandardItemModel* TreeViewDragDrop::fileModel_
private

The file model (used by fileView_)

Definition at line 289 of file TreeViewDragDrop.C.

WTableView* TreeViewDragDrop::fileView_
private

The file view.

Definition at line 301 of file TreeViewDragDrop.C.

WStandardItemModel* TreeViewDragDrop::folderModel_
private

The folder model (used by folderView_)

Definition at line 286 of file TreeViewDragDrop.C.

std::map<std::string, WString> TreeViewDragDrop::folderNameMap_
private

Maps folder id's to folder descriptions.

Definition at line 295 of file TreeViewDragDrop.C.

WTreeView* TreeViewDragDrop::folderView_
private

The folder view.

Definition at line 298 of file TreeViewDragDrop.C.

WPopupMenu* TreeViewDragDrop::popup_
private

Popup menu on the folder view.

Definition at line 304 of file TreeViewDragDrop.C.

WMessageBox* TreeViewDragDrop::popupActionBox_
private

Message box to confirm the poup menu action.

Definition at line 307 of file TreeViewDragDrop.C.

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