Implement wxDocument::Revert() and show its use in the sample.

[wxWidgets.git] / interface / wx / control.h

diff --git a/interface/wx/control.h b/interface/wx/control.h
index 2a9f82405946a0fcd91b47cb02cd8350d9d9de87..eb5bdc7cd5adfd0ed4e1339e0b83e0cee7ad545e 100644 (file)
--- a/interface/wx/control.h
+++ b/interface/wx/control.h
@@ -6,15 +6,78 @@
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 

+/**
+    Flags used by wxControl::Ellipsize function.
+*/
+enum wxEllipsizeFlags
+{
+    /// No special flags.
+    wxELLIPSIZE_FLAGS_NONE = 0,
+
+    /**
+        Take mnemonics into account when calculating the text width.
+
+        With this flag when calculating the size of the passed string,
+        mnemonics characters (see wxControl::SetLabel) will be automatically
+        reduced to a single character. This leads to correct calculations only
+        if the string passed to Ellipsize() will be used with
+        wxControl::SetLabel. If you don't want ampersand to be interpreted as
+        mnemonics (e.g. because you use wxControl::SetLabelText) then don't use
+        this flag.
+     */
+    wxELLIPSIZE_FLAGS_PROCESS_MNEMONICS = 1,
+
+    /**
+        Expand tabs in spaces when calculating the text width.
+
+        This flag tells wxControl::Ellipsize() to calculate the width of tab
+        characters @c '\\t' as 6 spaces.
+     */
+    wxELLIPSIZE_FLAGS_EXPAND_TABS = 2,
+
+    /// The default flags for wxControl::Ellipsize.
+    wxELLIPSIZE_FLAGS_DEFAULT = wxELLIPSIZE_FLAGS_PROCESS_MNEMONICS|
+                                wxELLIPSIZE_FLAGS_EXPAND_TABS
+};
+
+
+/**
+    The different ellipsization modes supported by the
+    wxControl::Ellipsize function.
+*/
+enum wxEllipsizeMode
+{
+    /// Don't ellipsize the text at all. @since 2.9.1
+    wxELLIPSIZE_NONE,
+
+    /// Put the ellipsis at the start of the string, if the string needs ellipsization.
+    wxELLIPSIZE_START,
+
+    /// Put the ellipsis in the middle of the string, if the string needs ellipsization.
+    wxELLIPSIZE_MIDDLE,
+
+    /// Put the ellipsis at the end of the string, if the string needs ellipsization.
+    wxELLIPSIZE_END
+};
+

 /**
     @class wxControl
 /**
     @class wxControl

-    @wxheader{control.h}

 
     This is the base class for a control or "widget".
 
     A control is generally a small window which processes user input and/or
     displays one or more item of data.
 
 
     This is the base class for a control or "widget".
 
     A control is generally a small window which processes user input and/or
     displays one or more item of data.
 

+    @beginEventEmissionTable{wxClipboardTextEvent}
+    @event{EVT_TEXT_COPY(id, func)}
+           Some or all of the controls content was copied to the clipboard.
+    @event{EVT_TEXT_CUT(id, func)}
+           Some or all of the controls content was cut (i.e. copied and
+           deleted).
+    @event{EVT_TEXT_PASTE(id, func)}
+           Clipboard content was pasted into the control.
+    @endEventTable
+

     @library{wxcore}
     @category{ctrl}
 
     @library{wxcore}
     @category{ctrl}
 


@@ -28,35 +91,117 @@ public:
 
         @see wxCommandEvent
     */
 
         @see wxCommandEvent
     */

-    void Command(wxCommandEvent& event);
+    virtual void Command(wxCommandEvent& event);

 
     /**
 
     /**

-        Returns the control's text.
+        Returns the control's label, as it was passed to SetLabel().
+
+        Note that the returned string may contains mnemonics ("&" characters) if they were
+        passed to the SetLabel() function; use GetLabelText() if they are undesired.

 
 

-        @note The returned string contains mnemonics ("&" characters) if it has
-              any, use GetLabelText() if they are undesired.
+        Also note that the returned string is always the string which was passed to
+        SetLabel() but may be different from the string passed to SetLabelText()
+        (since this last one escapes mnemonic characters).

     */
     wxString GetLabel() const;
 
     /**
         Returns the control's label without mnemonics.
     */
     wxString GetLabel() const;
 
     /**
         Returns the control's label without mnemonics.

-    */
-    const wxString GetLabelText();

 
 

-    /**
-        Returns the given @a label string without mnemonics.
+        Note that because of the stripping of the mnemonics the returned string may differ
+        from the string which was passed to SetLabel().

     */
     */

-    static wxString GetLabelText(const wxString& label);
+    wxString GetLabelText() const;

 
     /**
 
     /**

-        Sets the item's text.
+        Sets the control's label.

 
 

-        Any "&" characters in the @a label are special and indicate that the
-        following character is a mnemonic for this control and can be used to
+        All "&" characters in the @a label are special and indicate that the
+        following character is a @e mnemonic for this control and can be used to

         activate it from the keyboard (typically by using @e Alt key in
         combination with it). To insert a literal ampersand character, you need
         activate it from the keyboard (typically by using @e Alt key in
         combination with it). To insert a literal ampersand character, you need

-        to double it, i.e. use "&&".
+        to double it, i.e. use use "&&". If this behaviour is undesirable, use
+        SetLabelText() instead.

     */
     void SetLabel(const wxString& label);
     */
     void SetLabel(const wxString& label);

+
+    /**
+        Sets the control's label to exactly the given string.
+
+        Unlike SetLabel(), this function shows exactly the @a text passed to it
+        in the control, without interpreting ampersands in it in any way.
+        Notice that it means that the control can't have any mnemonic defined
+        for it using this function.
+
+        @see EscapeMnemonics()
+     */
+    void SetLabelText(const wxString& text);
+
+
+public:     // static functions
+    
+    /**
+        Returns the given @a label string without mnemonics ("&" characters).
+    */
+    static wxString GetLabelText(const wxString& label);
+
+    /**
+        Returns the given @a str string without mnemonics ("&" characters).
+        
+        @note This function is identic to GetLabelText() and is provided both for symmetry
+              with the wxStaticText::RemoveMarkup() function and to allow to write more
+              readable code (since this function has a more descriptive name respect GetLabelText()).
+    */
+    static wxString RemoveMnemonics(const wxString& str);
+
+    /**
+        Escapes the special mnemonics characters ("&") in the given string.
+
+        This function can be helpful if you need to set the controls label to a
+        user-provided string. If the string contains ampersands, they wouldn't
+        appear on the display but be used instead to indicate that the
+        character following the first of them can be used as a control mnemonic.
+        While this can sometimes be desirable (e.g. to allow the user to
+        configure mnemonics of the controls), more often you will want to use
+        this function before passing a user-defined string to SetLabel().
+        Alternatively, if the label is entirely user-defined, you can just call
+        SetLabelText() directly -- but this function must be used if the label
+        is a combination of a part defined by program containing the control
+        mnemonics and a user-defined part.
+
+        @param text
+            The string such as it should appear on the display.
+        @return
+            The same string with the ampersands in it doubled.
+     */
+    static wxString EscapeMnemonics(const wxString& text);
+
+    /**
+        Replaces parts of the @a label string with ellipsis, if needed, so
+        that it doesn't exceed @a maxWidth.
+        
+        Note that this functions is guaranteed to always returns a string
+        whose rendering on the given DC takes less than @a maxWidth pixels
+        in horizontal.
+
+        @param label
+            The string to ellipsize
+        @param dc
+            The DC used to retrieve the character widths through the
+            wxDC::GetPartialTextExtents() function.
+        @param mode
+            The ellipsization mode. This is the setting which determines
+            which part of the string should be replaced by the ellipsis.
+            See ::wxEllipsizeMode enumeration values for more info.
+        @param maxWidth
+            The maximum width of the returned string in pixels.
+            This argument determines how much characters of the string need to
+            be removed (and replaced by ellipsis).
+        @param flags
+            One or more of the ::wxEllipsizeFlags enumeration values combined.
+    */
+    static wxString Ellipsize(const wxString& label, const wxDC& dc,
+                              wxEllipsizeMode mode, int maxWidth,
+                              int flags = wxELLIPSIZE_FLAGS_DEFAULT);

 };
 
 };