xref: /haiku/docs/user/interface/TextView.dox (revision 4365774b6889e9467e4fd8719c5c89ca56240d28)

/*
 * Copyright 2001-2013 Haiku, Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *		Stephan Aßmus <superstippi@gmx.de>
 *		Stefano Ceccherini (stefano.ceccherini@gmail.com)
 *		John Scipione, jscipione@gmail.com
 *
 * Corresponds to:
 *		headers/os/interface/TextView.h	 hrev45377
 *		src/kits/interface/TextView.cpp	 hrev45377
 */


/*!
	\file TextView.h
	\ingroup interface
	\ingroup libbe
	\brief Provides the BTextView class and associated structs.
*/


/*!
	\struct text_run
	\ingroup interface
	\ingroup libbe
	\brief text run struct

	\since BeOS R3
*/


/*!
	\var text_run::offset

	\since BeOS R3
*/


/*!
	\var text_run::font

	\since BeOS R3
*/


/*!
	\var text_run::color

	\since BeOS R3
*/


/*!
	\struct text_run_array
	\ingroup interface
	\ingroup libbe
	\brief text run array struct

	\since BeOS R3
*/


/*!
	\var text_run_array::count

	\since BeOS R3
*/


/*!
	\var text_run_array::runs

	\since BeOS R3
*/


/*!
	\enum undo_state
	\ingroup interface

	Undo state flags.

	\since BeOS R3
*/


/*!
	\var undo_state B_UNDO_UNAVAILABLE

	\since BeOS R3
*/


/*!
	\var undo_state B_UNDO_TYPING

	\since BeOS R3
*/


/*!
	\var undo_state B_UNDO_CUT

	\since BeOS R3
*/


/*!
	\var undo_state B_UNDO_PASTE

	\since BeOS R3
*/


/*!
	\var undo_state B_UNDO_CLEAR

	\since BeOS R3
*/


/*!
	\var undo_state B_UNDO_DROP

	\since BeOS R3
*/


/*!
	\class BTextView
	\ingroup interface
	\ingroup libbe
	\brief Displays and manipulates styled text.

	Each BTextView instance has a TextRect() that keeps track of the bounds
	of the text inside it. BTextView will resize and reposition TextRect()
	as the view size changes in FrameResized(). You must set the initial
	text rect either in the constructor, or using SetTextRect().

	The dynamic layout versions of the constructor set the initial
	TextRect() to Bounds(). TextRect() uses the view's coordinate system.

	Setting the text rect to Bounds() will add some default insets
	repositioning the text inside the view. If you do not want this you may
	override the default insets by calling SetInsets(). It is recommended
	that you use SetInsets() to offset the initial text rect position
	instead of offsetting the text rect passed into the constructor.
	SetInsets() will retain insets with changing alignment and word-wrap
	while the distance of the initial TextRect() from the view Bounds()
	is not retained.

	TextRect() can be wider or narrower than the view and it can be taller
	or shorter. As you type, delete, cut, and paste the width and height of
	the text rect may change. If word-wrap is on, TextRect() width will
	always be set to the width of the view minus insets. If word-wrap is off
	TextRect() width will be set to the width of the longest line of text.
	The top and bottom of TextRect() will always be set to the top and bottom
	of the text. Highlight() will highlight multiple lines at least to the
	edge of the text view even if TextRect() is narrower.

	When TextRect() is made wider or taller than the view scroll bars will
	activate if present. You may scroll using ScrollToOffset() to scroll
	the text so that the character at the given offset is visible or you
	may call ScrollToSelection() to scroll the text so that the character
	that begins the selection is visible.

	Call SetText() to change the text. This will resize TextRect().

	Call SetWordWrap() to turn word-wrap on and off. This will resize
	TextRect().

	Call SetAlignment() to change the alignment to \c B_ALIGN_CENTER
	or \c B_ALIGN_RIGHT. This will reposition TextRect().

	Call SetStylable() to allow multiple font styles.

	Call SetTabWidth() to set the width of hard tabs. You may turn
	auto-indentation off with SetAutoindent().

	Call MakeSelectable() and MakeEditable() to turn the ability for text
	to be selectable or editable off. A non-editable, non-selectable text
	view can be useful as a BStringView that wraps.

	Call MakeResizable() to make the view width track with text width,
	this can be useful for short single-line text views.

	\since BeOS R3
*/


/*!
	\fn BTextView::BTextView(BRect frame, const char* name, BRect textRect,
		uint32 resizeMask, uint32 flags)
	\brief Creates a new BTextView object.

	\param frame The frame rectangle of the view.
	\param name The name of the view.
	\param textRect The area of the text within the view.
	\param resizeMask Resizing mask, passed to BView.
	\param flags \a flags passed to BView, \c B_FRAME_EVENTS,
		\c B_PULSE_NEEDED and \c B_INPUT_METHOD_AWARE are always set.

	\since BeOS R3
*/


/*!
	\fn BTextView::BTextView(BRect frame, const char* name, BRect textRect,
		const BFont* initialFont, const rgb_color* initialColor,
		uint32 resizeMask, uint32 flags)
	\brief Creates a new BTextView object and sets the initial font and color.

	\param frame The BTextView frame rectangle.
	\param name The name of the object.
	\param textRect The area of the text within the BTextView object.
	\param initialFont The text font to display.
	\param initialColor The text color to display.
	\param resizeMask Resizing mask, passed to BView.
	\param flags \a flags passed to BView, \c B_FRAME_EVENTS,
		\c B_PULSE_NEEDED and \c B_INPUT_METHOD_AWARE are always set.

	\since BeOS R3
*/


/*!
	\fn BTextView::BTextView(const char* name, uint32 flags)
	\brief Creates a BTextView object, dynamic layout version.

	\param name The name of the object.
	\param flags \a flags passed to BView, \c B_FRAME_EVENTS,
		\c B_PULSE_NEEDED and \c B_INPUT_METHOD_AWARE are always set.

	\since Haiku R1
*/


/*!
	\fn BTextView::BTextView(const char* name, const BFont* initialFont,
		const rgb_color* initialColor, uint32 flags)
	\brief Creates a new BTextView object and sets the initial font and color,
	       dynamic layout version.

	\param name The name of the object.
	\param initialFont The text font to display.
	\param initialColor The text color to display.
	\param flags \a flags passed to BView, \c B_FRAME_EVENTS,
		\c B_PULSE_NEEDED and \c B_INPUT_METHOD_AWARE are always set.

	\since Haiku R1
*/


/*!
	\fn BTextView::BTextView(BMessage* archive)
	\brief Creates a BTextView object from the passed in \a archive.

	\param archive The BMessage object from which the object is created.

	\since BeOS R3
*/


/*!
	\fn BTextView::~BTextView()
	\brief Frees the memory allocated and destroys the object.

	\since BeOS R3
*/


/*!
	\name Archiving
*/


//! @{


/*!
	\fn BArchivable* BTextView::Instantiate(BMessage* archive)
	\brief Instantiates a BTextView object from the passed in \a archive.

	\param archive The BMessage object that the object is created from.

	\return A new BTextView object as a BArchivable.

	\since BeOS R3
*/


/*!
	\fn status_t BTextView::Archive(BMessage* data, bool deep) const
	\brief Archives the object into the \a data message.

	\param data A pointer to the BMessage object to archive the object into.
	\param deep Whether or not to archive child views as well.

	\return A status code, \c B_OK if everything went well or an error code
	        otherwise.
	\retval B_OK The object was archived.
	\retval B_NO_MEMORY Ran out of memory while archiving the object.

	\since BeOS R3
*/


//! @}


/*!
	\name Hook Methods
*/


//! @{


/*!
	\fn void BTextView::AllAttached()
	\copydoc BView::AllAttached()
*/


/*!
	\fn void BTextView::AllDetached()
	\copydoc BView::AllDetached()
*/


/*!
	\fn void BTextView::AttachedToWindow()
	\brief Hook method called when the text view is added to the view hierarchy.

	Sets the pulse rate to 2 per second and adjust scrollbars if needed.

	\copydetails BView::AttachedToWindow()
*/


/*!
	\fn void BTextView::DetachedFromWindow()
	\brief Hook method that is called when the text view is removed from the
	       view hierarchy.

	\copydetails BView::DetachedFromWindow()
*/


/*!
	\fn void BTextView::Draw(BRect updateRect)
	\brief Hook method called to draw the contents of the text view.

	\param updateRect The rectangular area to draw.

	\since BeOS R3
*/


/*!
	\fn void BTextView::FrameResized(float newWidth, float newHeight)
	\brief Hook method that is called when the frame is resized.

	This method updates any associated scrollbars.

	\copydetails BView::FrameResized()
*/


/*!
	\fn void BTextView::KeyDown(const char* bytes, int32 numBytes)
	\brief Hook method that is called when a key is pressed while the view is
	       the focus view of the active window.

	\copydetails BView::KeyDown()
*/


/*!
	\fn void BTextView::MessageReceived(BMessage* message)
	\brief Hook method called with a message is received by the text view.

	\copydetails BView::MessageReceived()
*/


/*!
	\fn void BTextView::MouseDown(BPoint where)
	\brief Hook method that is called when a mouse button is pushed down while
	       the cursor is contained in the view.

	\copydetails BView::MouseDown()
*/


/*!
	\fn void BTextView::MouseUp(BPoint where)
	\brief Hook method that is called when a mouse button is released while
	       the cursor is contained in the view.

	This method stops asynchronous mouse tracking.

	\copydetails BView::MouseUp()
*/


/*!
	\fn void BTextView::MouseMoved(BPoint where, uint32 code,
		const BMessage* dragMessage)
	\brief Hook method that is called whenever the mouse cursor enters, exits
	       or moves inside the view.

	\copydetails BView::MouseMoved()
*/


/*!
	\fn void BTextView::Pulse()
	\brief Hook method that is called at a set interval.

	This method is used to make the I-beam cursor blink.

	\copydetails BView::Pulse()
*/


/*!
	\fn void BTextView::WindowActivated(bool active)
	\brief Hook method that is called when the window becomes the active window
	       or gives up that status.

	\copydetails BView::WindowActivated()
*/


//! @}


/*!
	\fn void BTextView::MakeFocus(bool focus)
	\brief Highlight or unhighlight the selection when the text view acquires
		or loses its focus state.

	\copydetails BView::MakeFocus()
*/


/*!
	\fn BHandler* BTextView::ResolveSpecifier(BMessage* message, int32 index,
		BMessage* specifier, int32 what, const char* property)
	\copydoc BHandler::ResolveSpecifier()
*/


/*!
	\name SetText

	The BTextView doesn't keep a reference to the \a text buffer, \a file, or
	\a runs array you pass in, you can \c delete them after SetText() returns.

	If the BTextView supports multiple character styles and a
	\c text_run_array is passed in it will be used to set the font and color
	formats of the new text.

	If the BTextView does not support multiple character styles, then the
	\c text_run_array parameter is ignored.

	\see IsStylable()
*/


//! @{


/*!
	\fn void BTextView::SetText(const char* text, const text_run_array* runs)
	\brief Copies text from the \a text buffer replacing any text currently
	       set in the BTextView with the font and color formats set by \a runs.

	\param text The text to set.
	\param runs Set the font and color formats of the new text if provided. Only
	       applies if the BTextView permits multiple character formats.

	\since BeOS R3
*/


/*!
	\fn void BTextView::SetText(const char* text, int32 length,
		const text_run_array* runs)
	\brief Copies text from the \a text buffer up to \a length characters
	       replacing any text currently set in the BTextView with the font and
	       color formats set by \a runs.

	\a text must be at least \a length characters long. \a length may be set
	to 0 to clear the text from the BTextView.

	\param text The text to set.
	\param length The maximum number of bytes of \a text to use.
	\param runs Set the font and color formats of the new text if provided. Only
	       applies if the BTextView permits multiple character formats.

	\since BeOS R3
*/


/*!
	\fn void BTextView::SetText(BFile* file, int32 offset, int32 length,
		const text_run_array* runs)
	\brief Copies text from the \a file starting at the given \a offset up to
	       \a length characters replacing any text currently set in the
	       BTextView with the font and color formats set by \a runs.

	\param file The file to set the text from.
	\param offset The position in the file to start reading text.
	\param length The number of bytes of text to read from the file.
	\param runs Set the font and color formats of the new text if provided. Only
	       applies if the BTextView permits multiple character formats.

	\since BeOS R3
*/


//! @}


/*!
	\name Insert

	The BTextView doesn't keep a reference to the \a text buffer or
	\a runs array you pass in, you can \c delete them after Insert() returns.

	If the BTextView supports multiple character styles and a
	\c text_run_array is passed in it will be used to set the font and color
	formats of the new text.

	If the BTextView does not support multiple character styles, then the
	\c text_run_array parameter is ignored.

	\see IsStylable()
*/

//! @{

/*!
	\fn void BTextView::Insert(const char* text, const text_run_array* runs)
	\brief Inserts text from the \a text buffer at the end of the BTextView
	       with the font and color formats set by \a runs.

	\param text The text to insert.
	\param runs The text styling to set, can be \c NULL.

	\since BeOS R3
*/


/*!
	\fn void BTextView::Insert(const char* text, int32 length,
		const text_run_array* runs)
	\brief Inserts text from the \a text buffer up to \a length characters
	       at the end of the BTextView with the font and color formats set by
	       \a runs.

	\param text The text to insert.
	\param length The number of bytes of text to insert.
	\param runs The text styling to use, can be \c NULL.

	\since BeOS R3
*/


/*!
	\fn void BTextView::Insert(int32 offset, const char* text, int32 length,
		const text_run_array* runs)
	\brief Inserts text starting at the given \a offset from the \a text buffer
	       up to \a length characters into the BTextView with the font and
	       color formats set by \a runs.

	\param offset The position to start inserting text.
	\param text The text to set.
	\param length The number of bytes of text to insert.
	\param runs The text styling to use, can be \c NULL.

	\since BeOS R3
*/


//! @}


/*!
	\name Delete
*/


//! @{


/*!
	\fn void BTextView::Delete()
	\brief Deletes the text within the current selection.

	\since BeOS R3
*/


/*!
	\fn void BTextView::Delete(int32 startOffset, int32 endOffset)
	\brief Deletes the text enclosed within the given offsets.

	\param startOffset The offset where the text to delete starts.
	\param endOffset The offset where the text to delete ends.

	\since BeOS R3
*/


//! @}


/*!
	\name Text Information
*/


//! @{


/*!
	\fn const char* BTextView::Text() const
	\brief Returns the BTextView text as a byte array.

	\warning It is possible that the BTextView object had to do some operations
	         on the text to be able to return it as a C string. If you need to
	         call Text() repeatedly, you'd better use GetText() instead.

	\returns A pointer to the text as a byte array.

	\since BeOS R3
*/


/*!
	\fn int32 BTextView::TextLength() const
	\brief Returns the text length of the BTextView text.

	\return The text length of the BTextView text.

	\since BeOS R3
*/


/*!
	\fn BTextView::GetText(int32 offset, int32 length, char* buffer) const
	\brief Fills out \a buffer with the text of the BTextView starting at
	       \a offset and grabbing at most \a length bytes.

	You must provide a \a buffer that is large enough to hold at least
	\a length bytes.

	\param offset Where to start grabbing text from.
	\param length The number of bytes of text to grab.
	\param buffer A \a buffer to write the text to.

	\see BString::GetString(int32 offset, int32 length, char* buffer)

	\since BeOS R3
*/


/*!
	\fn uchar BTextView::ByteAt(int32 offset) const
	\brief Returns the character at the given offset.

	\param offset The offset to the desired character.

	\return The character at the given offset.

	\since BeOS R3
*/


/*!
	\fn int32 BTextView::CountLines() const
	\brief Returns the number of lines that the BTextView object contains.

	\return The number of lines contained in the BTextView object.

	\since BeOS R3
*/


/*!
	\fn int32 BTextView::CurrentLine() const
	\brief Returns the index of the current line.

	\return The index of the current line.

	\since BeOS R3
*/


/*!
	\fn void BTextView::GoToLine(int32 index)
	\brief Moves the caret to the specified line.

	\param index The index of the line.

	\since BeOS R3
*/


//! @}


/*!
	\name Clipboard
*/


//! @{


/*!
	\fn void BTextView::Cut(BClipboard* clipboard)
	\brief Moves the current selection to the clipboard.

	\param clipboard The clipboard object to move the text to.

	\since BeOS R3
*/


/*!
	\fn void BTextView::Copy(BClipboard* clipboard)
	\brief Copies the current selection to the clipboard.

	\param clipboard The clipboard object to copy the selected text to.

	\since BeOS R3
*/


/*!
	\fn void BTextView::Paste(BClipboard* clipboard)
	\brief Copy the text contained in the clipboard to the BTextView.

	\param clipboard A pointer to the clipboard.

	\since BeOS R3
*/


/*!
	\fn bool BTextView::AcceptsPaste(BClipboard* clipboard)
	\brief Returns whether or not the BTextView can accept the
	       \a clipboard data.

	\returns \c true if the BTextView can accept the pasted clipboard data,
	         \c false otherwise.

	\since BeOS R3
*/


/*!
	\fn bool BTextView::AcceptsDrop(const BMessage* message)
	\brief Returns whether or not the BTextView can accept the dropped
	       \a message data.

	\returns \c true if the BTextView can accept the dropped message data,
	         \c false otherwise.

	\since BeOS R3
*/


//! @}


/*!
	\name Selection
*/


//! @{


/*!
	\fn void BTextView::Clear()
	\brief Deletes the currently selected text.

	\since BeOS R4
*/


/*!
	\fn void BTextView::Select(int32 startOffset, int32 endOffset)
	\brief Selects the text contained within the given offsets.

	\param startOffset The offset where the text to select starts.
	\param endOffset The offset where the text to select ends.

	\since BeOS R3
*/


/*!
	\fn void BTextView::SelectAll()
	\brief Selects all text contained in the BTextView.

	\sa Select()

	\since BeOS R3
*/


/*!
	\fn void BTextView::GetSelection(int32* _start, int32* _end) const
	\brief Fills out \a _start and \a _end with the start and end offsets of
	       the current selection.

	\param _start A pointer to an int32 to contain the selection's start
	       offset.
	\param _end A pointer to an int32 to contain the selection's end offset.

	\sa Select()

	\since BeOS R3
*/


/*!
	\fn text_run_array* BTextView::RunArray(int32 startOffset, int32 endOffset,
		int32* _size) const
	\brief Returns a \c text_run_array for the text within the given offsets.

	The returned \c text_run_array belongs to the caller, so you must
	free it once you no longer need it.

	\param startOffset The text start offset.
	\param endOffset The text end offset.
	\param _size A pointer to an int32 to fill out the run array size.

	\return A \c text_run_array for the text in the given offsets.

	\sa SetRunArray()

	\since BeOS R3
*/



/*!
	\fn int32 BTextView::LineAt(int32 offset) const
	\brief Returns the line number of the character at the given offset.

	\param offset The offset of the wanted character.

	\return The line number of the character at the given offset.

	\since BeOS R3
*/


/*!
	\fn int32 BTextView::LineAt(BPoint point) const
	\brief Returns the line number for the passed point.

	\param point The point to get the line number of.
	\return The line number for the passed in point.

	\since BeOS R3
*/


/*!
	\fn BPoint BTextView::PointAt(int32 offset, float* _height) const
	\brief Returns the location of the character at the given offset.

	\param offset The offset of the character.
	\param _height A pointer to write the height of the character.

	\return A BPoint object set to the location of the character.

	\since BeOS R3
*/


/*!
	\fn int32 BTextView::OffsetAt(BPoint point) const
	\brief Returns the offset at the passed in point.

	\param point The desired point.

	\return The offset for the passed in point.

	\since BeOS R3
*/



/*!
	\fn int32 BTextView::OffsetAt(int32 line) const
	\brief Returns the offset of the given line.

	\param line A line number.

	\return The offset of the passed line.

	\since BeOS R3
*/


/*!
	\fn void BTextView::FindWord(int32 offset, int32* _fromOffset,
		int32* _toOffset)
	\brief Fills out \a _fromOffset and \a _toOffset for a sequence of
	       character that qualifies as a word starting at \a offset.

	A word is a sequence of characters that the user can select by double-
	clicking.

	\param offset The offset where to start looking.
	\param _fromOffset A pointer to an integer to write the starting offset.
	\param _toOffset A pointer to an integer to write the ending offset.

	\since BeOS R3
*/


/*!
	\fn bool BTextView::CanEndLine(int32 offset)
	\brief Returns whether or not the character at the given offset can be
	       the last character of a line.

	\param offset The offset of the character.

	\returns \c true if the character can be the last character of a line,
	         \c false otherwise.

	\since BeOS R3
*/


/*!
	\fn float BTextView::LineWidth(int32 lineNumber) const
	\brief Returns the width of the line at the given \a lineNumber.

	\param lineNumber The index of the line to get the width of, 0-indexed.

	\returns The width of the line at the given \a lineNumber as a float.

	\since BeOS R3
*/


/*!
	\fn float BTextView::LineHeight(int32 lineNumber) const
	\brief Returns the height of the line at the given \a lineNumber.

	\param lineNumber The index of the line to get the height of, 0-indexed.

	\returns The height of the line at the given \a lineNumber as a float.

	\since BeOS R3
*/


/*!
	\fn float BTextView::TextHeight(int32 startLine, int32 endLine) const
	\brief Returns the height of the text enclosed within the given lines.

	\param startLine The index of the starting line.
	\param endLine The index of the ending line.

	\returns The height height of the text enclosed within the given lines
	         as a float.

	\since BeOS R3
*/


/*!
	\fn void BTextView::Highlight(int32 startOffset, int32 endOffset)
	\brief Highlight the text enclosed within the given offsets.

	\param startOffset The start offset of the text to highlight.
	\param endOffset The end offset of the text to highlight.

	\since BeOS R3
*/


//! @}


/*!
	\name Scrolling
*/


//! @{


/*!
	\fn void BTextView::ScrollToOffset(int32 offset)
	\brief Scrolls the text so that the character at \a offset is visible.

	\param offset The offset of the character to scroll to.

	\since BeOS R3
*/


/*!
	\fn void BTextView::ScrollToSelection()
	\brief Scrolls the text so that the character that begins the selection
	       is visible.

	\since BeOS R3
*/


//! @}


/*!
	\name TextRect
*/


//! @{


/*!
	\fn void BTextView::SetTextRect(BRect rect)
	\brief Sets the object's text frame to the passed in \a rect.

	\param rect A BRect object to set the text frame to.

	\since BeOS R3
*/


/*!
	\fn BRect BTextView::TextRect() const
	\brief Returns the BTextView's text frame.

	\return The BTextView's text frame.

	\see SetTextRect()

	\since BeOS R3
*/


//! @}


/*!
	\name Insets
*/


//! @{



/*!
	\fn void BTextView::SetInsets(float left, float top, float right,
		float bottom)
	\brief Sets the insets within the bounds for the object's text frame.

	\note Insets cannot be negative, will result in 0 inset.

	\param left The left inset to set.
	\param top The top inset to set.
	\param right The right inset to set.
	\param bottom The bottom inset to set.

	\since Haiku R1
*/


/*!
	\fn void BTextView::GetInsets(float* _left, float* _top, float* _right,
		float* _bottom) const
	\brief Fills out the parameters with the objects's text insets.

	\param _left A pointer to set to the frame's left inset.
	\param _top A pointer to set to the frame's top inset.
	\param _right A pointer to set to the frame's right inset.
	\param _bottom A pointer to set to the frame's bottom inset.

	\since BeOS R3
*/



//! @}


/*!
	\name Stylable
*/


//! @{



/*!
	\fn void BTextView::SetStylable(bool stylable)
	\brief Sets whether or not the object accepts multiple font styles.

	\param stylable \c true to accept multiple font styles,
	       \c false to NOT accept multiple font styles.

	\since BeOS R3
*/


/*!
	\fn bool BTextView::IsStylable() const
	\brief Returns whether or not the object accepts multiple font styles.

	\return \c true if the object is accepts multiple font styles,
	        \c false otherwise.

	\see SetStylable()

	\since BeOS R3
*/


//! @}


/*!
	\name Tab Width
*/


//! @{



/*!
	\fn void BTextView::SetTabWidth(float width)
	\brief Sets the distance between tab stops in pixels.

	\param width The distance in pixel between tab stops to set.

	\since BeOS R3
*/


/*!
	\fn float BTextView::TabWidth() const
	\brief Returns the tab width of the BTextView.

	\return The tab width of the BTextView.

	\see SetTabWidth()

	\since BeOS R3
*/


//! @}


/*!
	\name Selectable State
*/


//! @{



/*!
	\fn void BTextView::MakeSelectable(bool selectable)
	\brief Sets whether or not the text is selectable.

	\param selectable Pass in \c true to set the text to be selectable,
	       \c false to set the text to be not selectable.

	\since BeOS R3
*/


/*!
	\fn bool BTextView::IsSelectable() const
	\brief Returns whether or not the text is selectable.

	\return \c true if the text is selectable,
			\c false if the text is not selectable.

	\see MakeSelectable()

	\since BeOS R3
*/


//! @}


/*!
	\name Editable State
*/


//! @{



/*!
	\fn void BTextView::MakeEditable(bool editable)
	\brief Sets whether or not the text is editable.

	\param editable Pass in \c true to set the text to be editable,
	       \c false to set the object to be not editable.

	\since BeOS R3
*/


/*!
	\fn bool BTextView::IsEditable() const
	\brief Returns whether or not the text is editable.

	\return \c true if the text is editable, \c false if the text is not
	        editable.

	\see MakeEditable()

	\since BeOS R3
*/


//! @}


/*!
	\name Word Wrap
*/


//! @{



/*!
	\fn void BTextView::SetWordWrap(bool wrap)
	\brief Activate or deactivate word wrapping mode.

	\param wrap Pass in \c true to turn on word wrapping mode,
	       \c false to turn off word wrapping mode.

	\since BeOS R3
*/


/*!
	\fn bool BTextView::DoesWordWrap() const
	\brief Returns whether or not word wrapping is activated.

	\return \c true if word wrapping is activated, \c false is word wrapping
	        if not activated.

	\see SetWordWrap()

	\since BeOS R3
*/


//! @}


/*!
	\name Max Bytes
*/


//! @{



/*!
	\fn void BTextView::SetMaxBytes(int32 max)
	\brief Sets the maximum number of bytes that the BTextView can contain.

	\param max The maximum number of bytes to set.

	\since BeOS R3
*/


/*!
	\fn int32 BTextView::MaxBytes() const
	\brief Returns the maximum number of bytes that the BTextView can contain.

	\return the maximum number of bytes that the BTextView can contain.

	\see SetMaxBytes()

	\since BeOS R3
*/


//! @}


/*!
	\name Character Filtering
*/


//! @{



/*!
	\fn void BTextView::DisallowChar(uint32 character)
	\brief Adds the \a character to the disallowed characters list.

	After this method returns, the \a character won't be accepted
	by the textview anymore.

	\param character The character to disallow.

	\see AllowChar()

	\since BeOS R3
*/


/*!
	\fn void BTextView::AllowChar(uint32 character)
	\brief Removes the \a character from the disallowed characters list.

	After this method returns, the \a character will be accepted
	by the textview.

	\param character The character to allow.

	\see DisallowChar()

	\since BeOS R3
*/


//! @}


/*!
	\name Alignment
*/


//! @{



/*!
	\fn void BTextView::SetAlignment(alignment flag)
	\brief Sets the way text is aligned within the frame.

	Choices are:
	- \c B_ALIGN_LEFT
	- \c B_ALIGN_RIGHT
	- \c B_ALIGN_CENTER

	\param flag The text alignment to set.

	\since BeOS R3
*/


/*!
	\fn alignment BTextView::Alignment() const
	\brief Returns the current text alignment.

	\return The current alignment flag.

	\see SetAlignment()

	\since BeOS R3
*/


//! @}


/*!
	\name Autoindent
*/


//! @{



/*!
	\fn void BTextView::SetAutoindent(bool state)
	\brief Sets whether or not new lines of text are automatically indented.

	\param state Pass in \c true to automatically indent the text,
	       \c false to turn off automatic text indenting.

	\since BeOS R3
*/


/*!
	\fn bool BTextView::DoesAutoindent() const
	\brief Returns whether or not automatic indenting is active.

	\return \c true if automatic indenting is activated, \c false otherwise.

	\see SetAutoindent()

	\since BeOS R3
*/


//! @}


/*!
	\name Color Space
*/


//! @{



/*!
	\fn void BTextView::SetColorSpace(color_space colors)
	\brief Set the color space of the offscreen BBitmap object.

	\param colors The colorspace to set on the offscreen BBitmap object.

	\since BeOS R3
*/


/*!
	\fn color_space BTextView::ColorSpace() const
	\brief Returns the colorspace set to the offscreen BBitmap object.

	\return The colorspace of the offscreen BBitmap object.

	\see SetColorSpace()

	\since BeOS R3
*/


//! @}


/*!
	\name Resizable
*/


//! @{



/*!
	\fn void BTextView::MakeResizable(bool resize, BView* resizeView)
	\brief Activates and deactivates automatic resizing.

	The resizing mechanism is alternative to BView resizing. The container
	view (the one passed to this function) should not automatically resize
	itself when the parent is resized.

	\param resize Pass in \c true to set the the BTextView to automatically
	       resize itself, \c false to disable automatic resizing.
	\param resizeView The BTextView object's parent view that resizes itself.

	\since BeOS R3
*/


/*!
	\fn bool BTextView::IsResizable() const
	\brief Returns whether or not the object is resizable.

	\returns \c true if the object is resizable, \c false otherwise.

	\see MakeResizable()

	\since BeOS R3
*/


//! @}


/*!
	\name Undo State
*/


//! @{



/*!
	\fn void BTextView::SetDoesUndo(bool undo)
	\brief Enables and disables the undo mechanism.

	\param undo Pass in \c true to enable the undo mechanism,
	       \c false to disable it.

	\since BeOS R3
*/


/*!
	\fn bool BTextView::DoesUndo() const
	\brief Returns whether or not the undo mechanism is enabled.

	\return \c true if undo is enabled, \c false otherwise.

	\see SetDoesUndo()

	\since BeOS R3
*/


//! @}


/*!
	\name Hide Typing
*/


//! @{



/*!
	\fn void BTextView::HideTyping(bool enabled)
	\brief Enables and disables type hiding.

	\param enabled Pass in \c true to enable type hiding,
	       \c false to disable it.

	\since BeOS R5
*/


/*!
	\fn bool BTextView::IsTypingHidden() const
	\brief Returns whether or not typing is hidden.

	\return \c true if typing is hidden, \c false otherwise.

	\see HideTyping()

	\since BeOS R5
*/


//! @}