#include <Form.h>

Inheritance diagram for Form:

[legend]

Public Member Functions
	Form (WContainerWidget *parent=0)
	Instantiate a new form. More...

Public Member Functions inherited from Wt::WTable
	WTable ()

virtual	~WTable ()

WTableCell *	elementAt (int row, int column)

WTableRow *	rowAt (int row)

WTableColumn *	columnAt (int column)

void	removeCell (WTableCell *item)

virtual void	removeCell (int row, int column)

virtual WTableRow *	insertRow (int row, std::unique_ptr< WTableRow > tableRow=nullptr)

virtual std::unique_ptr< WTableRow >	removeRow (int row)

virtual WTableColumn *	insertColumn (int column, std::unique_ptr< WTableColumn > tableColumn=nullptr)

virtual std::unique_ptr< WTableColumn >	removeColumn (int column)

virtual void	clear ()

int	rowCount () const

int	columnCount () const

void	setHeaderCount (int count, Orientation orientation=Orientation::Horizontal)

int	headerCount (Orientation orientation=Orientation::Horizontal)

virtual void	moveRow (int from, int to)

virtual void	moveColumn (int from, int to)

Public Member Functions inherited from Wt::WInteractWidget
	WInteractWidget ()

EventSignal< WKeyEvent > &	keyWentDown ()

EventSignal< WKeyEvent > &	keyPressed ()

EventSignal< WKeyEvent > &	keyWentUp ()

EventSignal &	enterPressed ()

EventSignal &	escapePressed ()

EventSignal< WMouseEvent > &	clicked ()

EventSignal< WMouseEvent > &	doubleClicked ()

EventSignal< WMouseEvent > &	mouseWentDown ()

EventSignal< WMouseEvent > &	mouseWentUp ()

EventSignal< WMouseEvent > &	mouseWentOut ()

EventSignal< WMouseEvent > &	mouseWentOver ()

EventSignal< WMouseEvent > &	mouseMoved ()

EventSignal< WMouseEvent > &	mouseDragged ()

EventSignal< WMouseEvent > &	mouseWheel ()

EventSignal< WTouchEvent > &	touchStarted ()

EventSignal< WTouchEvent > &	touchEnded ()

EventSignal< WTouchEvent > &	touchMoved ()

EventSignal< WGestureEvent > &	gestureStarted ()

EventSignal< WGestureEvent > &	gestureChanged ()

EventSignal< WGestureEvent > &	gestureEnded ()

void	setDraggable (const std::string &mimeType, WWidget dragWidget=nullptr, bool isDragWidgetOnly=false, WObject sourceWidget=nullptr)

void	unsetDraggable ()

void	setMouseOverDelay (int delay)

int	mouseOverDelay () const

virtual void	setPopup (bool popup) override

virtual void	load () override

virtual bool	isEnabled () const override

Public Member Functions inherited from Wt::WWebWidget
	WWebWidget ()

virtual std::vector< WWidget *>	children () const override

Signal &	childrenChanged ()

virtual void	setPositionScheme (PositionScheme scheme) override

virtual PositionScheme	positionScheme () const override

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

virtual WLength	offset (Side s) const override

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

virtual WLength	width () const override

virtual WLength	height () const override

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

virtual WLength	minimumWidth () const override

virtual WLength	minimumHeight () const override

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

virtual WLength	maximumWidth () const override

virtual WLength	maximumHeight () const override

virtual void	setLineHeight (const WLength &height) override

virtual WLength	lineHeight () const override

virtual void	setFloatSide (Side s) override

virtual Side	floatSide () const override

virtual void	setClearSides (WFlags< Side > sides) override

virtual WFlags< Side >	clearSides () const override

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

virtual WLength	margin (Side side) const override

virtual void	setHiddenKeepsGeometry (bool enabled) override

virtual bool	hiddenKeepsGeometry () const override

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

virtual bool	isHidden () const override

virtual bool	isVisible () const override

virtual void	setDisabled (bool disabled) override

virtual bool	isDisabled () const override

virtual bool	isPopup () const override

virtual void	setInline (bool isInline) override

virtual bool	isInline () const override

virtual void	setDecorationStyle (const WCssDecorationStyle &style) override

virtual WCssDecorationStyle &	decorationStyle () override

virtual void	setStyleClass (const WString &styleClass) override

virtual WString	styleClass () const override

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

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

virtual bool	hasStyleClass (const WString &styleClass) const override

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

virtual AlignmentFlag	verticalAlignment () const override

virtual WLength	verticalAlignmentLength () const override

virtual void	setToolTip (const WString &text, TextFormat textFormat=TextFormat::Plain) override

virtual void	setDeferredToolTip (bool enable, TextFormat textFormat=TextFormat::Plain) override

virtual WString	toolTip () const override

virtual void	refresh () override

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

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

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

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

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

virtual bool	loaded () const override

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

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

virtual WWidget *	findById (const std::string &id) override

virtual void	setSelectable (bool selectable) override

virtual void	doJavaScript (const std::string &javascript) override

virtual const std::string	id () const override

void	setLoadLaterWhenInvisible (bool)

std::string	htmlTagName () const

void	setHtmlTagName (const std::string &tag)

virtual void	setCanReceiveFocus (bool enabled) override

virtual bool	canReceiveFocus () const override

virtual bool	setFirstFocus () override

virtual void	setFocus (bool focus) override

virtual bool	hasFocus () const override

virtual void	setTabIndex (int index) override

virtual int	tabIndex () const override

EventSignal &	blurred ()

EventSignal &	focussed ()

virtual bool	scrollVisibilityEnabled () const final override

virtual void	setScrollVisibilityEnabled (bool enabled) final override

virtual int	scrollVisibilityMargin () const final override

virtual void	setScrollVisibilityMargin (int margin) final override

virtual Signal< bool > &	scrollVisibilityChanged () final override

virtual bool	isScrollVisible () const final override

virtual void	setThemeStyleEnabled (bool enabled) final override

virtual bool	isThemeStyleEnabled () const final override

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

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

WWidget *	parent () const

virtual std::unique_ptr< WWidget >	removeWidget (WWidget *widget)

std::unique_ptr< Widget >	removeWidget (Widget *widget)

std::unique_ptr< WWidget >	removeFromParent ()

void	setWidth (const WLength &width)

void	setHeight (const WLength &height)

virtual void	positionAt (const WWidget *widget, Orientation 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
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 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	countryChanged ()
	The user selected a new country: adjust the cities combo box. More...

void	submit ()
	Submit the form. More...

void	createUI ()

void	addValidationStatus (int row, WFormWidget *field)
	Add a validation feedback for a field. More...

bool	validate ()
	Validate the form, and return whether succesfull. More...

bool	checkValid (WFormWidget *edit, const WString &text)
	Validate a single form field. More...

Private Attributes
WContainerWidget *	feedbackMessages_

WLineEdit *	nameEdit_

WLineEdit *	firstNameEdit_

WComboBox *	countryEdit_

WComboBox *	cityEdit_

WDateEdit *	birthDateEdit_

WLineEdit *	childCountEdit_

WLineEdit *	weightEdit_

WTextArea *	remarksEdit_

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

Static Public Member Functions inherited from Wt::WWebWidget
static std::string	jsStringLiteral (const std::string &v, char delimiter='\'')

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

Protected Member Functions inherited from Wt::WTable
virtual std::unique_ptr< WTableCell >	createCell (int row, int column)

virtual std::unique_ptr< WTableRow >	createRow (int row)

virtual std::unique_ptr< WTableColumn >	createColumn (int column)

Protected Member Functions inherited from Wt::WInteractWidget
virtual void	propagateSetEnabled (bool enabled) override

Protected Member Functions inherited from Wt::WWebWidget
virtual void	enableAjax () override

virtual WStatelessSlot *	getStateless (Method method) override

virtual void	render (WFlags< RenderFlag > flags) override

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

virtual void	layoutSizeChanged (int width, int height)

	WWidget ()

virtual void	dropEvent (WDropEvent dropEvent)

virtual int	boxPadding (Orientation orientation) const

virtual int	boxBorder (Orientation orientation) const

void	scheduleRender (WFlags< RepaintFlag > flags=None)

Detailed Description

A simple Form.

Shows how a simple form can made, with an emphasis on how to handle validation.

Definition at line 35 of file Form.h.

Constructor & Destructor Documentation

◆ Form()

Form::Form ( WContainerWidget * parent = 0 )

Instantiate a new form.

Definition at line 17 of file Form.C.

   : WTable(parent)
 {
   createUI();
 }

Member Function Documentation

◆ addValidationStatus()

void Form::addValidationStatus	(	int	row,
		WFormWidget *	field
	)

private

Add a validation feedback for a field.

◆ checkValid()

bool Form::checkValid	(	WFormWidget *	edit,
		const WString &	text
	)

private

Validate a single form field.

Checks the given field, and appends the given text to the error messages on problems.

Definition at line 158 of file Form.C.

 {
   if (edit->validate() != WValidator::Valid) {
     feedbackMessages_->addWidget(new WText(text));
     feedbackMessages_->addWidget(new WBreak());
     edit->label()->decorationStyle().setForegroundColor(Wt::red);
     edit->setStyleClass("Wt-invalid");
 
     return false;
   } else {
     edit->label()->decorationStyle().setForegroundColor(WColor());    
     edit->setStyleClass("");
 
     return true;
   }
 }

◆ countryChanged()

void Form::countryChanged ( )

private

The user selected a new country: adjust the cities combo box.

Definition at line 124 of file Form.C.

 {
   cityEdit_->clear();
   cityEdit_->addItem("");
   cityEdit_->setCurrentIndex(-1);
 
   switch (countryEdit_->currentIndex()) {
   case 0:
     break;
   case 1:
     cityEdit_->addItem("Antwerp");
     cityEdit_->addItem("Brussels");
     cityEdit_->addItem("Oekene");
     break;
   case 2:
     cityEdit_->addItem("Amsterdam");
     cityEdit_->addItem("Den Haag");
     cityEdit_->addItem("Rotterdam");
     break;
   case 3:
     cityEdit_->addItem("London");
     cityEdit_->addItem("Bristol");
     cityEdit_->addItem("Oxford");
     cityEdit_->addItem("Stonehenge");
     break;
   case 4:
     cityEdit_->addItem("Boston");
     cityEdit_->addItem("Chicago");
     cityEdit_->addItem("Los Angeles");
     cityEdit_->addItem("New York");
     break;
   }    
 }

◆ createUI()

void Form::createUI ( )

private

Definition at line 23 of file Form.C.

 {
   WLabel *label;
   int row = 0;
 
   // Title
   elementAt(row, 0)->setColumnSpan(3);
   elementAt(row, 0)->setContentAlignment(AlignTop | AlignCenter);
   elementAt(row, 0)->setPadding(10);
   WText *title = new WText(tr("example.form"),
                            elementAt(row, 0));
   title->decorationStyle().font().setSize(WFont::XLarge);
 
   // error messages
   ++row;
   elementAt(row, 0)->setColumnSpan(3);
   feedbackMessages_ = elementAt(row, 0);
   feedbackMessages_->setPadding(5);
 
   WCssDecorationStyle& errorStyle = feedbackMessages_->decorationStyle();
   errorStyle.setForegroundColor(Wt::red);
   errorStyle.font().setSize(WFont::Smaller);
   errorStyle.font().setWeight(WFont::Bold);
   errorStyle.font().setStyle(WFont::Italic);
 
   // Name
   ++row;
   nameEdit_ = new WLineEdit(elementAt(row, 2));
   label = new WLabel(tr("example.name"), elementAt(row, 0));
   label->setBuddy(nameEdit_);
   nameEdit_->setValidator(new WValidator(true));
   nameEdit_->enterPressed().connect(this, &Form::submit);
 
   // First name
   ++row;
   firstNameEdit_ = new WLineEdit(elementAt(row, 2));
   label = new WLabel(tr("example.firstname"), elementAt(row,0));
   label->setBuddy(firstNameEdit_);
 
   // Country
   ++row;
   countryEdit_ = new WComboBox(elementAt(row, 2));
   countryEdit_->addItem("");
   countryEdit_->addItem("Belgium");
   countryEdit_->addItem("Netherlands");
   countryEdit_->addItem("United Kingdom");
   countryEdit_->addItem("United States");
   label = new WLabel(tr("example.country"), elementAt(row, 0));
   label->setBuddy(countryEdit_);
   countryEdit_->setValidator(new WValidator(true));
   countryEdit_->changed().connect(this, &Form::countryChanged);
 
   // City
   ++row;
   cityEdit_ = new WComboBox(elementAt(row, 2));
   cityEdit_->addItem(tr("example.choosecountry"));
   label = new WLabel(tr("example.city"), elementAt(row, 0));
   label->setBuddy(cityEdit_);
 
   // Birth date
   ++row;
 
   birthDateEdit_ = new WDateEdit(elementAt(row, 2));
   birthDateEdit_->setBottom(WDate(1900, 1, 1));
   birthDateEdit_->setTop(WDate::currentDate());
   label = new WLabel(tr("example.birthdate"), elementAt(row, 0));
   label->setBuddy(birthDateEdit_);
   birthDateEdit_->setFormat("dd/MM/yyyy");
   birthDateEdit_->validator()->setMandatory(true);
 
   // Child count
   ++row;
   childCountEdit_ = new WLineEdit("0", elementAt(row, 2));
   label = new WLabel(tr("example.childcount"),
                      elementAt(row, 0));
   label->setBuddy(childCountEdit_);
   childCountEdit_->setValidator(new WIntValidator(0,30));
   childCountEdit_->validator()->setMandatory(true);
 
   ++row;
   remarksEdit_ = new WTextArea(elementAt(row, 2));
   remarksEdit_->setColumns(40);
   remarksEdit_->setRows(5);
   label = new WLabel(tr("example.remarks"),
                      elementAt(row, 0));
   label->setBuddy(remarksEdit_);
 
   // Submit
   ++row;
   WPushButton *submit = new WPushButton(tr("submit"),
                                         elementAt(row, 0));
   submit->clicked().connect(this, &Form::submit);
   submit->setMargin(15, Top);
   elementAt(row, 0)->setColumnSpan(3);
   elementAt(row, 0)->setContentAlignment(AlignTop | AlignCenter);
 
   // Set column widths for label and validation icon
   elementAt(2, 0)->resize(WLength(30, WLength::FontEx), WLength::Auto);
   elementAt(2, 1)->resize(20, WLength::Auto);
 }

◆ submit()

void Form::submit ( )

private

Submit the form.

Definition at line 192 of file Form.C.

 {
   if (validate()) {
     // do something useful with the data...
     std::wstring name
       = firstNameEdit_->text() + L" " + nameEdit_->text();
 
     std::wstring remarks
       = remarksEdit_->text();
 
     clear();
 
     new WText(WString::fromUTF8("<p>Thank you, {1}, "
                                 "for all this precious data.</p>").arg(name),
               elementAt(0, 0));
     
     if (!remarks.empty())
       new WText("<p>You had some remarks. Splendid !</p>", elementAt(0, 0));
 
     wApp->quit();
   }
 }

◆ validate()

bool Form::validate ( )

private

Validate the form, and return whether succesfull.

Definition at line 175 of file Form.C.

 {
   feedbackMessages_->clear();
   bool valid = true;
 
   if (!checkValid(nameEdit_, tr("error.name")))
     valid = false;
   if (!checkValid(countryEdit_, tr("error.country")))
     valid = false;
   if (!checkValid(birthDateEdit_, tr("error.birthdate")))
     valid = false;
   if (!checkValid(childCountEdit_, tr("error.childcount")))
     valid = false;
 
   return valid;
 }

Member Data Documentation

◆ birthDateEdit_

WDateEdit* Form::birthDateEdit_

private

Definition at line 61 of file Form.h.

◆ childCountEdit_

WLineEdit* Form::childCountEdit_

private

Definition at line 62 of file Form.h.

◆ cityEdit_

WComboBox* Form::cityEdit_

private

Definition at line 59 of file Form.h.

◆ countryEdit_

WComboBox* Form::countryEdit_

private

Definition at line 58 of file Form.h.

◆ feedbackMessages_

WContainerWidget* Form::feedbackMessages_

private

Definition at line 53 of file Form.h.

◆ firstNameEdit_

WLineEdit* Form::firstNameEdit_

private

Definition at line 56 of file Form.h.

◆ nameEdit_

WLineEdit* Form::nameEdit_

private

Definition at line 55 of file Form.h.

◆ remarksEdit_

WTextArea* Form::remarksEdit_

private

Definition at line 65 of file Form.h.

◆ weightEdit_

WLineEdit* Form::weightEdit_

private

Definition at line 63 of file Form.h.

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

/home/roel/project/wt/public-git/wt/examples/form/Form.h
/home/roel/project/wt/public-git/wt/examples/form/Form.C

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Form()

Member Function Documentation

◆ addValidationStatus()

◆ checkValid()

◆ countryChanged()

◆ createUI()

◆ submit()

◆ validate()

Member Data Documentation

◆ birthDateEdit_

◆ childCountEdit_

◆ cityEdit_

◆ countryEdit_

◆ feedbackMessages_

◆ firstNameEdit_

◆ nameEdit_

◆ remarksEdit_

◆ weightEdit_