Wt examples  4.10.4
Public Member Functions | Private Member Functions | Private Attributes | List of all members
TreeViewDragDrop Class Reference

Main application class. More...

Inheritance diagram for TreeViewDragDrop:
[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
 
std::shared_ptr< WLocalizedStrings > localizedStrings ()
 
void setLocalizedStrings (const std::shared_ptr< WLocalizedStrings > &stringResolver)
 
WMessageResourceBundle & messageResourceBundle ()
 
void setLocale (const WLocale &locale)
 
const WLocale & locale () const
 
virtual void refresh ()
 
void bindWidget (std::unique_ptr< 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 ()
 
virtual void initialize ()
 
virtual void finalize ()
 
void setTwoPhaseRenderingThreshold (int size)
 
void setCookie (const Http::Cookie &cookie)
 
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 Http::Cookie &cookie)
 
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 (std::unique_ptr< WLoadingIndicator > indicator)
 
WLoadingIndicator * loadingIndicator () const
 
void quit ()
 
void quit (const WString &restartMessage)
 
bool hasQuit () const
 
::int64_t maximumRequestSize () const
 
Signal< ::int64_t > & requestTooLarge ()
 
void setConfirmCloseMessage (const WString &message)
 
void deferRendering ()
 
void resumeRendering ()
 
std::string encodeUntrustedUrl (const std::string &url) const
 
void pushExposedConstraint (WWidget *w)
 
void suspend (std::chrono::seconds duration)
 
Signal & unsuspended ()
 
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 WLinkedCssStyleSheet &styleSheet, const std::string &condition="")
 
void removeStyleSheet (const WLink &link)
 
void setTheme (const std::shared_ptr< WTheme > &theme)
 
std::shared_ptr< 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
 
void setHtmlAttribute (const std::string &name, const std::string &value)
 
WString htmlAttribute (const std::string &name) const
 
void setBodyAttribute (const std::string &name, const std::string &value)
 
WString bodyAttribute (const std::string &name) 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
 
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 ()
 
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 WLinkedCssStyleSheet &styleSheet, const std::string &condition="")
 
void removeStyleSheet (const WLink &link)
 
void setTheme (const std::shared_ptr< WTheme > &theme)
 
std::shared_ptr< 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
 
void setHtmlAttribute (const std::string &name, const std::string &value)
 
WString htmlAttribute (const std::string &name) const
 
void setBodyAttribute (const std::string &name, const std::string &value)
 
WString bodyAttribute (const std::string &name) 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
 
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 ()
 
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
void addChild (std::unique_ptr< WObject > child)
 
Child * addChild (std::unique_ptr< Child > child)
 
std::unique_ptr< WObject > removeChild (WObject *child)
 
std::unique_ptr< Child > removeChild (Child *child)
 
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)
 
- Public Member Functions inherited from Wt::Core::observable
 observable () noexcept
 
virtual ~observable ()
 
auto bindSafe (void(C::*method)(Args...)) noexcept
 
auto bindSafe (void(C::*method)(Args...) const) const noexcept
 
auto bindSafe (const Function &function) noexcept
 

Private Member Functions

void createUI ()
 Setup the user interface. More...
 
std::unique_ptr< WText > createTitle (const WString &title)
 Creates a title widget. More...
 
std::unique_ptr< WTreeView > folderView ()
 Creates the folder WTreeView. More...
 
std::unique_ptr< WTableView > fileView ()
 Creates the file table view (a WTableView) More...
 
void editFile (const WModelIndex &item)
 Edit a particular row. More...
 
std::unique_ptr< WWidget > pieChart ()
 Creates the chart. More...
 
std::unique_ptr< 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...
 
std::unique_ptr< WStandardItem > createFolderItem (const WString &location, const std::string &folderId=std::string())
 Create a folder item. More...
 

Private Attributes

std::shared_ptr< WStandardItemModel > folderModel_
 The folder model (used by folderView_) More...
 
std::shared_ptr< WStandardItemModel > fileModel_
 The file model (used by fileView_) More...
 
std::shared_ptr< 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...
 
std::unique_ptr< FileEditDialog > dialog_
 
std::unique_ptr< WPopupMenu > popup_
 Popup menu on the folder view. More...
 
std::unique_ptr< WMessageBox > popupActionBox_
 Message box to confirm the poup menu action. More...
 

Additional Inherited Members

- Public Types inherited from Wt::WApplication
typedef Wt::ApplicationCreator ApplicationCreator
 
typedef std::function< std::unique_ptr< 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)
 
- 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 idleTimeout ()
 
virtual void handleJavaScriptError (const std::string &errorText)
 
- Protected Member Functions inherited from Wt::WObject
virtual WStatelessSlot * getStateless (Method method)
 

Detailed Description

Main application class.

Definition at line 253 of file TreeViewDragDrop.C.

Constructor & Destructor Documentation

◆ TreeViewDragDrop()

TreeViewDragDrop::TreeViewDragDrop ( const WEnvironment &  env)
inline

Constructor.

Definition at line 258 of file TreeViewDragDrop.C.

259  : WApplication(env),
260  popup_(nullptr),
261  popupActionBox_(nullptr)
262  {
263  setCssTheme("polished");
264 
265  /*
266  * Create the data models.
267  */
268  folderModel_ =
269  std::make_shared<WStandardItemModel>(0, 1);
270  populateFolders();
271 
272 
273  fileModel_ =
274  std::make_shared<FileModel>();
275  populateFiles();
276 
277  /*
278  * The header items are also endered using an ItemDelegate, and thus
279  * support other data, e.g.:
280  *
281  * fileModel_->setHeaderFlags(0, Horizontal, HeaderIsUserCheckable);
282  * fileModel_->setHeaderData(0, Horizontal,
283  * std::string("icons/file.gif"),
284  * Wt::DecorationRole);
285  */
286  fileFilterModel_ = std::make_shared<WSortFilterProxyModel>();
287  fileFilterModel_->setSourceModel(fileModel_);
288  fileFilterModel_->setDynamicSortFilter(true);
289  fileFilterModel_->setFilterKeyColumn(0);
290  fileFilterModel_->setFilterRole(ItemDataRole::User);
291 
292  /*
293  * Setup the user interface.
294  */
295  createUI();
296 
297  }
TreeViewDragDrop::fileModel_
std::shared_ptr< WStandardItemModel > fileModel_
The file model (used by fileView_)
Definition: TreeViewDragDrop.C:309
TreeViewDragDrop::fileFilterModel_
std::shared_ptr< WSortFilterProxyModel > fileFilterModel_
The sort filter proxy model that adapts fileModel_.
Definition: TreeViewDragDrop.C:312
TreeViewDragDrop::createUI
void createUI()
Setup the user interface.
Definition: TreeViewDragDrop.C:333
TreeViewDragDrop::folderModel_
std::shared_ptr< WStandardItemModel > folderModel_
The folder model (used by folderView_)
Definition: TreeViewDragDrop.C:306
TreeViewDragDrop::popupActionBox_
std::unique_ptr< WMessageBox > popupActionBox_
Message box to confirm the poup menu action.
Definition: TreeViewDragDrop.C:329
TreeViewDragDrop::popup_
std::unique_ptr< WPopupMenu > popup_
Popup menu on the folder view.
Definition: TreeViewDragDrop.C:326
TreeViewDragDrop::populateFiles
void populateFiles()
Populate the files model.
Definition: TreeViewDragDrop.C:590
TreeViewDragDrop::populateFolders
void populateFolders()
Populate the folders model.
Definition: TreeViewDragDrop.C:632
Wt::WApplication::setCssTheme
void setCssTheme(const std::string &name)
Wt::WApplication::WApplication
WApplication(const WEnvironment &environment)

◆ ~TreeViewDragDrop()

virtual TreeViewDragDrop::~TreeViewDragDrop ( )
inlinevirtual

Definition at line 299 of file TreeViewDragDrop.C.

300  {
301  dialog_.reset();
302  }
TreeViewDragDrop::dialog_
std::unique_ptr< FileEditDialog > dialog_
Definition: TreeViewDragDrop.C:323

Member Function Documentation

◆ aboutDisplay()

std::unique_ptr<WWidget> TreeViewDragDrop::aboutDisplay ( )
inlineprivate

Creates the hints text.

Definition at line 485 of file TreeViewDragDrop.C.

485  {
486  std::unique_ptr<WText> result
487  = std::make_unique<WText>(WString::tr("about-text"));
488  result->setStyleClass("about");
489  return std::move(result);
490  }

◆ convertToDate()

void TreeViewDragDrop::convertToDate ( WStandardItem *  item)
inlineprivate

Convert a string to a date.

Definition at line 618 of file TreeViewDragDrop.C.

618  {
619  WDate d = WDate::fromString(item->text(), FileModel::dateEditFormat);
620  item->setData(cpp17::any(d), ItemDataRole::Display);
621  }
FileModel::dateEditFormat
static WString dateEditFormat
Date edit format.
Definition: TreeViewDragDrop.C:69
Wt::WStandardItem::setData
virtual void setData(const cpp17::any &data, ItemDataRole role=ItemDataRole::User)
Wt::WStandardItem::text
WString text() const

◆ convertToNumber()

void TreeViewDragDrop::convertToNumber ( WStandardItem *  item)
inlineprivate

Convert a string to a number.

Definition at line 625 of file TreeViewDragDrop.C.

625  {
626  int i = asNumber(item->text());
627  item->setData(cpp17::any(i), ItemDataRole::Edit);
628  }
asNumber
double asNumber(const cpp17::any &v)

◆ createFolderItem()

std::unique_ptr<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 665 of file TreeViewDragDrop.C.

667  {
668  auto result
669  = std::make_unique<WStandardItem>(location);
670 
671  if (!folderId.empty()) {
672  result->setData(cpp17::any(folderId));
673  result->setFlags(result->flags() | ItemFlag::DropEnabled);
674  folderNameMap_[folderId] = location;
675  } else
676  result->setFlags(result->flags().clear(ItemFlag::Selectable));
677 
678  result->setIcon("icons/folder.gif");
679 
680  return result;
681  }
TreeViewDragDrop::folderNameMap_
std::map< std::string, WString > folderNameMap_
Maps folder id's to folder descriptions.
Definition: TreeViewDragDrop.C:315
ItemFlag::Selectable
@ Selectable
ItemFlag::DropEnabled
@ DropEnabled

◆ createTitle()

std::unique_ptr<WText> TreeViewDragDrop::createTitle ( const WString &  title)
inlineprivate

Creates a title widget.

Definition at line 371 of file TreeViewDragDrop.C.

371  {
372  auto result = std::make_unique<WText>(title);
373  result->setInline(false);
374  result->setStyleClass("title");
375 
376  return result;
377  }
Wt::WApplication::title
const WString & title() const

◆ createUI()

void TreeViewDragDrop::createUI ( )
inlineprivate

Setup the user interface.

Definition at line 333 of file TreeViewDragDrop.C.

333  {
334  WContainerWidget *w = root();
335  w->setStyleClass("maindiv");
336 
337  /*
338  * The main layout is a 3x2 grid layout.
339  */
340  std::unique_ptr<WGridLayout> layout =
341  std::make_unique<WGridLayout>();
342  layout->addWidget(createTitle("Folders"), 0, 0);
343  layout->addWidget(createTitle("Files"), 0, 1);
344  layout->addWidget(folderView(), 1, 0);
345  layout->setColumnResizable(0);
346 
347  // select the first folder
348  folderView_->select(folderModel_->index(0, 0, folderModel_->index(0, 0)));
349 
350  std::unique_ptr<WVBoxLayout> vbox =
351  std::make_unique<WVBoxLayout>();
352  vbox->addWidget(fileView(), 1);
353  vbox->addWidget(pieChart(), 1);
354  vbox->setResizable(0);
355 
356  layout->addLayout(std::move(vbox), 1, 1);
357 
358  layout->addWidget(aboutDisplay(), 2, 0, 1, 2);
359 
360  /*
361  * Let row 1 and column 1 take the excess space.
362  */
363  layout->setRowStretch(1, 1);
364  layout->setColumnStretch(1, 1);
365 
366  w->setLayout(std::move(layout));
367  }
TreeViewDragDrop::fileView
std::unique_ptr< WTableView > fileView()
Creates the file table view (a WTableView)
Definition: TreeViewDragDrop.C:411
TreeViewDragDrop::folderView
std::unique_ptr< WTreeView > folderView()
Creates the folder WTreeView.
Definition: TreeViewDragDrop.C:381
TreeViewDragDrop::aboutDisplay
std::unique_ptr< WWidget > aboutDisplay()
Creates the hints text.
Definition: TreeViewDragDrop.C:485
TreeViewDragDrop::createTitle
std::unique_ptr< WText > createTitle(const WString &title)
Creates a title widget.
Definition: TreeViewDragDrop.C:371
TreeViewDragDrop::pieChart
std::unique_ptr< WWidget > pieChart()
Creates the chart.
Definition: TreeViewDragDrop.C:455
TreeViewDragDrop::folderView_
WTreeView * folderView_
The folder view.
Definition: TreeViewDragDrop.C:318
Wt::WAbstractItemView::select
void select(const WModelIndex &index, SelectionFlag option=SelectionFlag::Select)
Wt::WApplication::root
WContainerWidget * root() const
Wt::WContainerWidget::setLayout
void setLayout(std::unique_ptr< WLayout > layout)
Wt::WWebWidget::setStyleClass
virtual void setStyleClass(const WString &styleClass) override

◆ dialogDone()

void TreeViewDragDrop::dialogDone ( )
inlineprivate

Process the result of the message box.

Definition at line 579 of file TreeViewDragDrop.C.

579  {
580  popupActionBox_.reset();
581  }

◆ editFile()

void TreeViewDragDrop::editFile ( const WModelIndex &  item)
inlineprivate

Edit a particular row.

Definition at line 449 of file TreeViewDragDrop.C.

449  {
450  dialog_ = std::make_unique<FileEditDialog>(fileView_->model(), item);
451  }
TreeViewDragDrop::fileView_
WTableView * fileView_
The file view.
Definition: TreeViewDragDrop.C:321
Wt::WAbstractItemView::model
std::shared_ptr< WAbstractItemModel > model() const

◆ fileView()

std::unique_ptr<WTableView> TreeViewDragDrop::fileView ( )
inlineprivate

Creates the file table view (a WTableView)

Definition at line 411 of file TreeViewDragDrop.C.

411  {
412  auto tableView
413  = std::make_unique<WTableView>();
414 
415  tableView->setAlternatingRowColors(true);
416 
417  tableView->setModel(fileFilterModel_);
418  tableView->setSelectionMode(SelectionMode::Extended);
419  tableView->setDragEnabled(true);
420 
421  tableView->setColumnWidth(0, 100);
422  tableView->setColumnWidth(1, 150);
423  tableView->setColumnWidth(2, 100);
424  tableView->setColumnWidth(3, 60);
425  tableView->setColumnWidth(4, 100);
426  tableView->setColumnWidth(5, 100);
427 
428  auto delegate = std::make_shared<WItemDelegate>();
429  delegate->setTextFormat(FileModel::dateDisplayFormat);
430  tableView->setItemDelegateForColumn(4, delegate);
431  tableView->setItemDelegateForColumn(5, delegate);
432 
433  tableView->setColumnAlignment(3, AlignmentFlag::Right);
434  tableView->setColumnAlignment(4, AlignmentFlag::Right);
435  tableView->setColumnAlignment(5, AlignmentFlag::Right);
436 
437  tableView->sortByColumn(1, SortOrder::Ascending);
438 
439  tableView->doubleClicked().connect(this, std::bind(&TreeViewDragDrop::editFile,
440  this, std::placeholders::_1));
441 
442  fileView_ = tableView.get();
443 
444  return tableView;
445  }
FileModel::dateDisplayFormat
static WString dateDisplayFormat
Date display format.
Definition: TreeViewDragDrop.C:66
TreeViewDragDrop::editFile
void editFile(const WModelIndex &item)
Edit a particular row.
Definition: TreeViewDragDrop.C:449
SortOrder::Ascending
@ Ascending

◆ folderChanged()

void TreeViewDragDrop::folderChanged ( )
inlineprivate

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

Definition at line 495 of file TreeViewDragDrop.C.

495  {
496  if (folderView_->selectedIndexes().empty())
497  return;
498 
499  WModelIndex selected = *folderView_->selectedIndexes().begin();
500  cpp17::any d = selected.data(ItemDataRole::User);
501  if (cpp17::any_has_value(d)) {
502  std::string folder = cpp17::any_cast<std::string>(d);
503 
504  // For simplicity, we assume here that the folder-id does not
505  // contain special regexp characters, otherwise these need to be
506  // escaped -- or use the \Q \E qutoing escape regular expression
507  // syntax (and escape \E)
508  fileFilterModel_->setFilterRegExp(std::unique_ptr<std::regex>(new std::regex(folder)));
509  }
510  }
Wt::WAbstractItemView::selectedIndexes
WModelIndexSet selectedIndexes() const
Wt::WModelIndex::data
cpp17::any data(ItemDataRole role=ItemDataRole::Display) const

◆ folderView()

std::unique_ptr<WTreeView> TreeViewDragDrop::folderView ( )
inlineprivate

Creates the folder WTreeView.

Definition at line 381 of file TreeViewDragDrop.C.

381  {
382  auto treeView = std::make_unique<FolderView>();
383 
384  /*
385  * To support right-click, we need to disable the built-in browser
386  * context menu.
387  *
388  * Note that disabling the context menu and catching the
389  * right-click does not work reliably on all browsers.
390  */
391  treeView->setAttributeValue
392  ("oncontextmenu",
393  "event.cancelBubble = true; event.returnValue = false; return false;");
394  treeView->setModel(folderModel_);
395  treeView->resize(200, WLength::Auto);
396  treeView->setSelectionMode(SelectionMode::Single);
397  treeView->setEnabledDropLocations(DropLocation::OnItem);
398  treeView->expandToDepth(1);
399  treeView->selectionChanged()
400  .connect(this, &TreeViewDragDrop::folderChanged);
401 
402  treeView->mouseWentUp().connect(this, &TreeViewDragDrop::showPopup);
403 
404  folderView_ = treeView.get();
405 
406  return std::move(treeView);
407  }
TreeViewDragDrop::folderChanged
void folderChanged()
Change the filter on the file view when the selected folder changes.
Definition: TreeViewDragDrop.C:495
TreeViewDragDrop::showPopup
void showPopup(const WModelIndex &item, const WMouseEvent &event)
Show a popup for a folder item.
Definition: TreeViewDragDrop.C:514

◆ pieChart()

std::unique_ptr<WWidget> TreeViewDragDrop::pieChart ( )
inlineprivate

Creates the chart.

Definition at line 455 of file TreeViewDragDrop.C.

455  {
456  using namespace Chart;
457 
458  auto chart = std::make_unique<WPieChart>();
459  // chart->setPreferredMethod(WPaintedWidget::PngImage);
460  chart->setModel(fileFilterModel_);
461  chart->setTitle("File sizes");
462 
463  chart->setLabelsColumn(1); // Name
464  chart->setDataColumn(3); // Size
465 
466  chart->setPerspectiveEnabled(true, 0.2);
467  chart->setDisplayLabels(LabelOption::Outside | LabelOption::TextLabel);
468 
469  if (!WApplication::instance()->environment().ajax()) {
470  chart->resize(500, 200);
471  chart->setMargin(WLength::Auto, Side::Left | Side::Right);
472 
473  auto w = std::make_unique<WContainerWidget>();
474  w->addWidget(std::move(chart));
475  w->setStyleClass("about");
476  return std::move(w);
477  } else {
478  chart->setStyleClass("about");
479  return std::move(chart);
480  }
481  }
Wt::WApplication::environment
const WEnvironment & environment() const
LabelOption::Outside
@ Outside
LabelOption::TextLabel
@ TextLabel

◆ populateFiles()

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 590 of file TreeViewDragDrop.C.

590  {
591  fileModel_->invisibleRootItem()->setRowCount(0);
592 
593  std::ifstream f((appRoot() + "data/files.csv").c_str());
594 
595  if (!f)
596  throw std::runtime_error("Could not read: data/files.csv");
597 
598  readFromCsv(f, fileModel_);
599 
600  for (int i = 0; i < fileModel_->rowCount(); ++i) {
601  WStandardItem *item = fileModel_->item(i, 0);
602  item->setFlags(item->flags() | ItemFlag::DragEnabled);
603  item->setIcon("icons/file.gif");
604 
605  std::string folderId = item->text().toUTF8();
606 
607  item->setData(cpp17::any(folderId), ItemDataRole::User);
608  item->setText(folderNameMap_[folderId]);
609 
610  convertToNumber(fileModel_->item(i, 3));
611  convertToDate(fileModel_->item(i, 4));
612  convertToDate(fileModel_->item(i, 5));
613  }
614  }
TreeViewDragDrop::convertToDate
void convertToDate(WStandardItem *item)
Convert a string to a date.
Definition: TreeViewDragDrop.C:618
TreeViewDragDrop::convertToNumber
void convertToNumber(WStandardItem *item)
Convert a string to a number.
Definition: TreeViewDragDrop.C:625
Wt::WApplication::appRoot
static std::string appRoot()
Wt::WStandardItem::setIcon
void setIcon(const std::string &uri)
Wt::WStandardItem::setText
void setText(const WString &text)
Wt::WStandardItem::flags
WFlags< ItemFlag > flags() const
Wt::WStandardItem::setFlags
void setFlags(WFlags< ItemFlag > flags)
Wt::WString::toUTF8
std::string toUTF8() const
ItemFlag::DragEnabled
@ DragEnabled
readFromCsv
void readFromCsv(std::istream &f, std::shared_ptr< WAbstractItemModel > model, int numRows, bool firstLineIsHeaders)
Definition: CsvUtil.C:54

◆ populateFolders()

void TreeViewDragDrop::populateFolders ( )
inlineprivate

Populate the folders model.

Definition at line 632 of file TreeViewDragDrop.C.

632  {
633  std::unique_ptr<WStandardItem> level1;
634 
635  level1 = createFolderItem("San Fransisco");
636  level1->appendRow(createFolderItem("Investors", "sf-investors"));
637  level1->appendRow(createFolderItem("Fellows", "sf-fellows"));
638  folderModel_->appendRow(std::move(level1));
639 
640  level1 = createFolderItem("Sophia Antipolis");
641  level1->appendRow(createFolderItem("R&D", "sa-r_d"));
642  level1->appendRow(createFolderItem("Services", "sa-services"));
643  level1->appendRow(createFolderItem("Support", "sa-support"));
644  level1->appendRow(createFolderItem("Billing", "sa-billing"));
645  folderModel_->appendRow(std::move(level1));
646 
647  level1 = createFolderItem("New York");
648  level1->appendRow(createFolderItem("Marketing", "ny-marketing"));
649  level1->appendRow(createFolderItem("Sales", "ny-sales"));
650  level1->appendRow(createFolderItem("Advisors", "ny-advisors"));
651  folderModel_->appendRow(std::move(level1));
652 
653  level1 = createFolderItem(WString(reinterpret_cast<const char*>(u8"Frankf\u00DCrt")));
654  level1->appendRow(createFolderItem("Sales", "frank-sales"));
655  folderModel_->appendRow(std::move(level1));
656 
657  folderModel_->setHeaderData(0, Orientation::Horizontal,
658  cpp17::any(std::string("SandBox")));
659  }
TreeViewDragDrop::createFolderItem
std::unique_ptr< WStandardItem > createFolderItem(const WString &location, const std::string &folderId=std::string())
Create a folder item.
Definition: TreeViewDragDrop.C:665

◆ popupAction()

void TreeViewDragDrop::popupAction ( )
inlineprivate

Process the result of the popup menu.

Definition at line 556 of file TreeViewDragDrop.C.

556  {
557  if (popup_->result()) {
558  /*
559  * You could also bind extra data to an item using setData() and
560  * check here for the action asked. For now, we just use the text.
561  */
562  WString text = popup_->result()->text();
563  popup_->hide();
564 
565  popupActionBox_ = std::make_unique<WMessageBox>("Sorry.","Action '"
566  + text + "' is not implemented.",
567  Icon::None,
568  StandardButton::Ok);
569  popupActionBox_->buttonClicked()
570  .connect(this, &TreeViewDragDrop::dialogDone);
571  popupActionBox_->show();
572  } else {
573  popup_->hide();
574  }
575  }
TreeViewDragDrop::dialogDone
void dialogDone()
Process the result of the message box.
Definition: TreeViewDragDrop.C:579

◆ showPopup()

void TreeViewDragDrop::showPopup ( const WModelIndex &  item,
const WMouseEvent &  event 
)
inlineprivate

Show a popup for a folder item.

Definition at line 514 of file TreeViewDragDrop.C.

514  {
515  if (event.button() == MouseButton::Right) {
516  // Select the item, it was not yet selected.
517  if (!folderView_->isSelected(item))
518  folderView_->select(item);
519 
520  if (!popup_) {
521  popup_ = std::make_unique<WPopupMenu>();
522  popup_->addItem("icons/folder_new.gif", "Create a New Folder");
523  popup_->addItem("Rename this Folder")->setCheckable(true);
524  popup_->addItem("Delete this Folder");
525  popup_->addSeparator();
526  popup_->addItem("Folder Details");
527  popup_->addSeparator();
528  popup_->addItem("Application Inventory");
529  popup_->addItem("Hardware Inventory");
530  popup_->addSeparator();
531 
532  std::unique_ptr<WPopupMenu> subMenu = std::make_unique<WPopupMenu>();
533  subMenu->addItem("Sub Item 1");
534  subMenu->addItem("Sub Item 2");
535  popup_->addMenu("File Deployments", std::move(subMenu));
536 
537  /*
538  * This is one method of executing a popup, which does not block a
539  * thread for a reentrant event loop, and thus scales.
540  *
541  * Alternatively you could call WPopupMenu::exec(), which returns
542  * the result, but while waiting for it, blocks the thread.
543  */
544  popup_->aboutToHide().connect(this, &TreeViewDragDrop::popupAction);
545  }
546 
547  if (popup_->isHidden())
548  popup_->popup(event);
549  else
550  popup_->hide();
551  }
552  }
TreeViewDragDrop::popupAction
void popupAction()
Process the result of the popup menu.
Definition: TreeViewDragDrop.C:556
Wt::WAbstractItemView::isSelected
bool isSelected(const WModelIndex &index) const
Wt::WMouseEvent::button
MouseButton button() const

Member Data Documentation

◆ dialog_

std::unique_ptr<FileEditDialog> TreeViewDragDrop::dialog_
private

Definition at line 323 of file TreeViewDragDrop.C.

◆ fileFilterModel_

std::shared_ptr<WSortFilterProxyModel> TreeViewDragDrop::fileFilterModel_
private

The sort filter proxy model that adapts fileModel_.

Definition at line 312 of file TreeViewDragDrop.C.

◆ fileModel_

std::shared_ptr<WStandardItemModel> TreeViewDragDrop::fileModel_
private

The file model (used by fileView_)

Definition at line 309 of file TreeViewDragDrop.C.

◆ fileView_

WTableView* TreeViewDragDrop::fileView_
private

The file view.

Definition at line 321 of file TreeViewDragDrop.C.

◆ folderModel_

std::shared_ptr<WStandardItemModel> TreeViewDragDrop::folderModel_
private

The folder model (used by folderView_)

Definition at line 306 of file TreeViewDragDrop.C.

◆ folderNameMap_

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

Maps folder id's to folder descriptions.

Definition at line 315 of file TreeViewDragDrop.C.

◆ folderView_

WTreeView* TreeViewDragDrop::folderView_
private

The folder view.

Definition at line 318 of file TreeViewDragDrop.C.

◆ popup_

std::unique_ptr<WPopupMenu> TreeViewDragDrop::popup_
private

Popup menu on the folder view.

Definition at line 326 of file TreeViewDragDrop.C.

◆ popupActionBox_

std::unique_ptr<WMessageBox> TreeViewDragDrop::popupActionBox_
private

Message box to confirm the poup menu action.

Definition at line 329 of file TreeViewDragDrop.C.

The documentation for this class was generated from the following file:
Generated on Wed Mar 6 2024 for the C++ Web Toolkit (Wt) by  doxygen 1.9.1