TextEditor (gb.form.editor)

This control is an enhanced text editor with syntax highlighting support.

This editor has the following special features:

Source code syntax highlighting for Gambas, HTML, CSS, C, C++, JavaScript, SQL and diff files.
Fully managed editing including Copy, Paste, Cut, Undo and Redo.
Line wrapping!
Many IDE selectable display features (Line numbering, block folding indicators, brace matching indicators...
Coding enhancements such as bookmarks, tab expansion, breakpoint indicatiors...
...and much more!

This class inherits UserControl in gb.qt4.

This class is creatable.

This class acts like a read-only array.

Properties

Bookmarks	Return or set the list of lines having a bookmark
Border	Returns or sets if the control has a border.
Breakpoints	Return or set the list of lines having a breakpoint
CloseBraces	Return or set if braces are automatically closed.
CloseStrings	Return or set if strings are automatically closed.
Column	Return the cursor position in the current line.
Count	Return the number of lines.
Current	Return the current line as a virtual object.
CurrentWord	Return the current word around the cursor.
DiffMode	Return or set if the "diff mode" is activated.
DisabledBreakpoints	Return or set the list of lines having a disabled breakpoint
EndOfLine	Return or set the newline separator used by the editor.
Font	Returns or sets the font used to draw text in the control.
Highlight	Return or set the highlighting mode.
Keywords	Return the language keywords associated with the editor mode, as defined by the Mode property.
LastColumn	Return the old column position before a cursor move.
LastLine	Return the old line position before a cursor move.
Length	Compute and return the length of the Text property as UTF-8 characters.
Line	Return the cursor line position.
LineHeight	Return the height of a line in pixels.
LineNumberOffset	Return or set the line number offset.
Max	Return the number of lines minus one.
Mode	Return or set the editor mode.
Overwrite	Return or set if the editor is in overwrite mode.
ReadOnly	Return or set if the editor is read-only.
Rewrite	Return or set if the highlighter can rewrite the highlighted contents.
ScrollBar	Return or set which scrollbars are displayed.
ScrollH	Returns the contents height.
ScrollHeight	Returns the contents height.
ScrollW	Returns the contents width.
ScrollWidth	Returns the contents width.
ScrollX	Returns or sets the horizontal scrolling position.
ScrollY	Returns or sets the vertical scrolling position.
Selected	Return if some text is selected.
SelectedText	Return the editor selected text.
SelectionColumn	Return the column position of the selection mark.
SelectionLine	Return the line position of the selection mark.
ShowBraces	Return or set if matching braces are highlighted.
ShowCurrent	Return or set if the current line is highlighted.
ShowCursor	Return or set if the cursor is visible.
ShowExpand	Return or set if the functions can be collapsed and expanded.
ShowIcon	Return or set if the breakpoint or bookmark icons are visible.
ShowIndent	Return or set if the editor displays tab characters as little gray arrows.
ShowLimit	Return or set if the function limits are visible.
ShowLineNumber	Return or set if the editor show line numbers.
ShowModified	Return or set if the modified lines are highlighted in the margin.
ShowPosition	Return or set if the cursor current position is displayed.
ShowPreview	Return or set if the editor replaces its scrollbar by a minified preview.
ShowSpaces	Return or set if trailing whitespaces are displayed as dots.
StopLine	Return or set the debugger stop line.
Styles	Return a virtual object that allows to define the editor highlighting style.
TabIndent	Return or set if the ident is made of tab characters.
TabSize	Return or set the tab size.
Text	Return or set the editor text contents.
Theme	Return or set the theme used for highlighting. Replace the Styles property.
View	Return or set the main view of a editor.
Wrap	Return or set if the editor wraps the lines to fit the control width.

Inherited properties

Action	Returns or sets the action string associated with the control.
Background	Returns or sets the background color used by the control.
Children	Returns a collection of each control included in the container.
ClientH	A synonymous for the ClientHeight property.
ClientHeight	Returns the height of the area containing the controls.
ClientW	A synonymous for the ClientWidth property.
ClientWidth	Returns the width of the area containing the controls.
ClientX	Returns the position of the left border of the area containing the controls.
ClientY	Returns the position of the top border of the area containing the controls.
Cursor	Use this property for assigning a custom cursor to a control.
Design	Indicates that the control is in design mode.
Direction	Return or set the control text direction.
Drop	Returns or sets if a control accepts drops.
Enabled	Indicates that the control is enabled.
Expand	Returns or sets if a control will expand if included in a container that arranges its contents.
Foreground	Returns or sets the foreground color used by the control.
H	A synonymous for the Height property.
Handle	Returns the internal X11 window handle of the control.
HasFocus	Returns whether the control has the focus.
Height	Returns or sets the height of the control.
Hovered	Returns whether the mouse cursor is inside the control.
Id	A synonymous for the Handle property.
Ignore	Returns or sets if a control must be ignored when its parent arranges its children.
Left	Returns or sets the position of the left border of the control relative to its parent.
Mouse	Returns or sets the appearence of the cursor when it points inside the control.
Name	Returns or sets the name of the control.
Next	Returns the next control having the same parent.
NoTabFocus	Return or set if a control cannot be focused with the TAB key.
Parent	Returns the control container.
PopupMenu	Return or set the name of the menu that will be popped-up when the user presses the right mouse button or the keyboard `MENU` key.
Previous	Returns the previous control having the same parent.
Proxy	Return or set the "proxy" of a control.
ProxyFor	Return which control that control is a proxy for.
RightToLeft	Return if the control is right to left oriented.
ScreenX	Returns the position of the left border of the control in screen coordinates.
ScreenY	Returns the position of the top border of the control in screen coordinates.
Tag	Returns or sets the control tag.
Tooltip	Returns or sets the tooltip shown when the mouse stays on the control for a short time.
Top	Returns or sets the position of the top border of the control relative to its parent.
Tracking	Returns or sets if the control will receive MouseMove events.
Visible	Indicates if the control is visible or not.
W	A synonymous for the Width property.
Width	Returns or sets the width of the control.
Window	Returns the top-level window that contains the control.
X	Returns or sets the position of the left border of the control relative to its parent.
Y	Returns or sets the position of the top border of the control relative to its parent.

Methods

Append	Append some text to the editor's end without moving the cursor.
Begin	Start a serie of changes that will be undone in one shot.
Clear	Clear the editor contents
CollapseAll	Collapse all functions
Copy	Copy the currently selected text to the clipboard.
CursorAt	Convert a cursor position into pixel position
Cut	Copy the currently selected text to the clipboard, and delete the selected text.
End	End a serie of changes.
EnsureVisible
EnterDiffMode	Enter "diff mode".
ExpandAll	Expand all functions.
FindNextDiff	Find the line position of the next difference.
FindNextLimit	Find the line position of the next function limit.
FindNextString	Find the next line containing a specific string or find the next occurence of a string.
FindPreviousDiff	Find the line position of the previous difference.
FindPreviousLimit	Find the line position of the previous function limit.
FindPreviousString	Find the previous line containing a specific string or find the previous occurence of a string.
GetHighlight	Return the highlighting of a specific line.
GetIndent	Return the indent of a line or of a line range.
GetSelectedLines	Return the selected lines if any.
Goto	Move the cursor to the specified position.
GotoCenter	Move the cursor to the specified position and center the view around it.
HideSelection	Hide the current selection if any.
HighlightString	Highlight a specific string everywhere in the editor.
Indent	Indent the selected text, or the current line if there is no selected text.
Insert	Insert some text at the current cursor position.
IsVoid	Return if the editor contents is void.
LeaveDiffMode	Leave `diff mode`.
Load	Load a file into the editor.
LowerCase	Convert the selected text to lower case.
Paste	Paste the contents of the clipboard inside the editor.
Print	Print some text inside the editor.
Redo	Redo the last undone editor modification.
Refresh	Refresh the editor view.
Remove	Remove the text located between two cursor positions.
Reset	Reset the modified and saved flags of each line.
RestoreCursor	Restore the cursor position and selection range saved by the SaveCursor method.
Save	Save the editor contents into a file.
SaveCursor	Save the current cursor position and selection range.
Scroll	Scroll the TextEditor contents to the given position.
Select	Select a specific text range.
SelectAll	Select all editor contents
ShowFindPanel	Display the text search panel.
ShowGotoPanel	Display the goto line panel.
ToColumn	Return the column located under the specified mouse cursor position.
ToLine	Return the line located under the specified mouse cursor position.
ToPos	Return the relative position in pixels of a specific cursor position.
ToPosX	Return the relative horizontal position in pixels of a specific cursor position.
ToPosY	Return the relative vertical position in pixels of a specific cursor position.
Undo	Undo the last editor modification.
Unindent	Unindent the selected text, or the current line if there is no selected text.
UpperCase	Convert the selected text to upper case.

Inherited methods

Delete	Destroys the control.
Drag	Starts a drag & drop process.
FindChild	Finds the first child control pointed by the X and Y coordinates.
Grab	Grab the keyboard and the mouse so that all keyboard and mouse events are received by the control.
Hide	Hides the control.
Lower	Sends the control to the background of its parent.
Move	Moves and/or resizes the control.
MoveScaled	Moves and/or resizes the control.
Raise	Sends the control to the foreground of its parent.
Reparent	Changes the container of a control.
Resize	Resizes the control.
ResizeScaled	Resizes the control.
SetFocus	Gives the focus to the control.
Show	Shows the control.

Events

Change	This event is raised when the editor contents has changed.
Cursor	This event is raised when the cursor has moved.
Highlight	This event is raised when a text line must be highlighted.
Margin	This event is raised when the user has clicked twice inside the margin.
Scroll	This event is raised when the editor has scrolled.

Inherited events

Arrange	This event is raised when a container has just finished arranging its contents.
BeforeArrange	This event is raised just before a container arranges its contents.
DblClick	Raised when the user quickly clicks twice on the control.
Drag	This event is raised when the mouse enters the control during a drag & drop process.
DragLeave	This event is raised when the mouse leaves the control during a drag & drop operation.
DragMove	This event is raised while the mouse moves inside the control during a drag & drop process.
Drop	This event is raised when a drag is dropped in the control.
Enter	Raised when the mouse enters the control.
GotFocus	Raised when the control has got the focus.
KeyPress	Raised when a key is pressed while the control has the focus.
KeyRelease	Raised when a key is released while the control has the focus.
Leave	Raised when the mouse leaves the control.
LostFocus	Raised when the control has lost the focus.
Menu	Raised when the user clicks on the control with the right mouse button, or if it hits the `MENU` key.
MouseDown	Raised when a mouse button is pressed while the cursor is inside the control.
MouseDrag	This event is raised when a drag operation should be started.
MouseMove	Raised when the mouse moves inside the control while a mouse button is pressed.
MouseUp	Raised when a mouse button is depressed while the cursor is inside the control.
MouseWheel	This event is raised when the user moves or presses the mouse wheel while the mouse is inside the control.
NewChild	This event is raised when a new child Control has just been inserted into the container.

Guess where it's used within Gambas itself

Do not use the normal Background and Foreground properties to change the look of a TextEditor.

To change background colors or other highlighting styles within the Editor control you must use the Theme property and a gb.highlight constant.

For example:

TextEditor1.Theme["Background"].Color = Color.RGB(200, 200, 200)

See the gb.highlight class for all available constants.