Wt examples  4.10.4
Public Member Functions | Private Member Functions | Private Attributes | List of all members
HelloApplication Class Reference
Inheritance diagram for HelloApplication:
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Public Member Functions

 HelloApplication (const Wt::WEnvironment &env)
 
- 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 greet ()
 

Private Attributes

Wt::WLineEdit * nameEdit_
 
Wt::WText * greeting_
 

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

Definition at line 18 of file hello.C.

Constructor & Destructor Documentation

◆ HelloApplication()

HelloApplication::HelloApplication ( const Wt::WEnvironment &  env)

Definition at line 36 of file hello.C.

37  : WApplication(env)
38 {
39  setTitle("Hello world"); // application title
40 
41  root()->addWidget(std::make_unique<Wt::WText>("Your name, please ? ")); // show some text
42 
43  nameEdit_ = root()->addWidget(std::make_unique<Wt::WLineEdit>()); // allow text input
44  nameEdit_->setFocus(); // give focus
45 
46  auto button = root()->addWidget(std::make_unique<Wt::WPushButton>("Greet me."));
47  // create a button
48  button->setMargin(5, Wt::Side::Left); // add 5 pixels margin
49 
50  root()->addWidget(std::make_unique<Wt::WBreak>()); // insert a line break
51  greeting_ = root()->addWidget(std::make_unique<Wt::WText>()); // empty text
52 
53  /*
54  * Connect signals with slots
55  *
56  * - simple Wt-way: specify object and method
57  */
58  button->clicked().connect(this, &HelloApplication::greet);
59 
60  /*
61  * - using an arbitrary function object, e.g. useful to bind
62  * values with std::bind() to the resulting method call
63  */
64  nameEdit_->enterPressed().connect(std::bind(&HelloApplication::greet, this));
65 
66  /*
67  * - using a lambda:
68  */
69  button->clicked().connect([=]() {
70  std::cerr << "Hello there, " << nameEdit_->text() << std::endl;
71  });
72 }
HelloApplication::greeting_
Wt::WText * greeting_
Definition: hello.C:25
HelloApplication::greet
void greet()
Definition: hello.C:74
HelloApplication::nameEdit_
Wt::WLineEdit * nameEdit_
Definition: hello.C:24
Wt::EventSignal::connect
Wt::Signals::connection connect(F function)
Wt::WApplication::root
WContainerWidget * root() const
Wt::WApplication::setTitle
void setTitle(const WString &title)
Wt::WApplication::WApplication
WApplication(const WEnvironment &environment)
Wt::WContainerWidget::addWidget
virtual void addWidget(std::unique_ptr< WWidget > widget)
Wt::WInteractWidget::enterPressed
EventSignal & enterPressed()
Wt::WLineEdit::text
const WString & text() const
Wt::WWebWidget::setFocus
virtual void setFocus(bool focus) override

Member Function Documentation

◆ greet()

void HelloApplication::greet ( )
private

Definition at line 74 of file hello.C.

75 {
76  /*
77  * Update the text, using text input into the nameEdit_ field.
78  */
79  greeting_->setText("Hello there, " + nameEdit_->text());
80 }
Wt::WText::setText
bool setText(const WString &text)

Member Data Documentation

◆ greeting_

Wt::WText* HelloApplication::greeting_
private

Definition at line 25 of file hello.C.

◆ nameEdit_

Wt::WLineEdit* HelloApplication::nameEdit_
private

Definition at line 24 of file hello.C.

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