KDE API ReferenceKTextEditor
#include <smartinterface.h>
Public Member Functions | |
| SmartInterface () | |
| virtual | ~SmartInterface () |
| bool | clearOnDocumentReload () const |
| void | clearRevision () |
| virtual void | clearSmartInterface ()=0 |
| virtual int | currentRevision () const =0 |
| virtual void | releaseRevision (int revision) const =0 |
| void | setClearOnDocumentReload (bool clearOnReload) |
| QMutex * | smartMutex () const |
| virtual KTextEditor::Cursor | translateFromRevision (const KTextEditor::Cursor &cursor, KTextEditor::SmartCursor::InsertBehavior insertBehavior=KTextEditor::SmartCursor::StayOnInsert) const |
| virtual KTextEditor::Range | translateFromRevision (const KTextEditor::Range &range, KTextEditor::SmartRange::InsertBehaviors insertBehavior=KTextEditor::SmartRange::ExpandLeft|KTextEditor::SmartRange::ExpandRight) const |
| virtual void | useRevision (int revision)=0 |
Smart Cursors | |
The following functions allow for creation and deletion of SmartCursors. | |
| virtual SmartCursor * | newSmartCursor (const Cursor &position=Cursor::start(), SmartCursor::InsertBehavior insertBehavior=SmartCursor::MoveOnInsert)=0 |
| SmartCursor * | newSmartCursor (int line, int column, SmartCursor::InsertBehavior insertBehavior=SmartCursor::MoveOnInsert) |
| virtual void | deleteCursors ()=0 |
Smart Ranges | |
The following functions allow for creation of new SmartRanges. | |
| virtual SmartRange * | newSmartRange (const Range &range=Range(), SmartRange *parent=0L, SmartRange::InsertBehaviors insertBehavior=SmartRange::DoNotExpand)=0 |
| SmartRange * | newSmartRange (const Cursor &startPosition, const Cursor &endPosition, SmartRange *parent=0L, SmartRange::InsertBehaviors insertBehavior=SmartRange::DoNotExpand) |
| SmartRange * | newSmartRange (int startLine, int startColumn, int endLine, int endColumn, SmartRange *parent=0L, SmartRange::InsertBehaviors insertBehavior=SmartRange::DoNotExpand) |
| virtual SmartRange * | newSmartRange (SmartCursor *start, SmartCursor *end, SmartRange *parent=0L, SmartRange::InsertBehaviors insertBehavior=SmartRange::DoNotExpand)=0 |
| virtual void | unbindSmartRange (SmartRange *range)=0 |
| virtual void | deleteRanges ()=0 |
Arbitrary Highlighting | |
The following functions enable highlighting processing for SmartRanges with arbitrary highlighting information. | |
| virtual void | addHighlightToDocument (SmartRange *topRange, bool supportDynamic=false)=0 |
| virtual void | removeHighlightFromDocument (SmartRange *topRange)=0 |
| virtual const QList< SmartRange * > | documentHighlights () const =0 |
| virtual void | clearDocumentHighlights ()=0 |
| virtual void | addHighlightToView (View *view, SmartRange *topRange, bool supportDynamic=false)=0 |
| virtual void | removeHighlightFromView (View *view, SmartRange *topRange)=0 |
| virtual const QList< SmartRange * > | viewHighlights (View *view) const =0 |
| virtual void | clearViewHighlights (View *view)=0 |
| virtual void | addActionsToDocument (SmartRange *topRange)=0 |
| virtual void | removeActionsFromDocument (SmartRange *topRange)=0 |
| virtual const QList< SmartRange * > | documentActions () const =0 |
| virtual void | clearDocumentActions ()=0 |
| virtual void | addActionsToView (View *view, SmartRange *topRange)=0 |
| virtual void | removeActionsFromView (View *view, SmartRange *topRange)=0 |
| virtual const QList< SmartRange * > | viewActions (View *view) const =0 |
| virtual void | clearViewActions (View *view)=0 |
| virtual void | attributeDynamic (Attribute::Ptr a)=0 |
| virtual void | attributeNotDynamic (Attribute::Ptr a)=0 |
Detailed Description
A Document extension interface for handling SmartCursors and SmartRanges.
Topics:
- Introduction
- Creation of SmartCursors and SmartRanges
- Arbitrary Highlighting
- Action Binding
- Accessing the Interface
Introduction
Use this interface to:
- create new SmartCursors and SmartRanges;
- create arbitrary highlighting; and
- associate KActions with ranges of text
Creation of SmartCursors and SmartRanges
These functions must be used to create SmartCursors and SmartRanges. This means that these objects cannot be derived from by third party applications.
You then own these objects; upon deletion they de-register themselves from the Document with which they were associated. Alternatively, they are all deleted with the deletion of the owning Document.
Arbitrary Highlighting
Arbitrary highlighting of text can be achieved by creating SmartRanges in a tree structure, and assigning appropriate Attributes to these ranges.
To highlight all views, use addHighlightToDocument(); to highlight one or some of the views, use addHighlightToView(). You only need to call this function once per tree; just supply the top range you want to have highlighted. Calling this function more than once with ranges from the same tree may give undefined results.
Action Binding
Action binding can be used to associate KActions with specific ranges of text. These bound actions are automatically enabled and disabled when the caret enters their associated ranges, and context menus are automatically populated with the relevant actions.
As with the arbitrary highlighting interface, to enable bound actions to be active, call addActionsToDocument() or addActionsToView() on the top SmartRange of a tree. If only small branches of a tree contain actions, it may be more efficient to simply add each of these branches instead (but this is unlikely unless the tree is complex).
Note that actions can be bound either directly to the range via SmartRange::associateAction(), or indirectly via Attribute::associateAction(). Using attributes may be more convenient when you want all ranges of a specific type to have the same action associated with them.
- Todo:
- extend this to provide a signal from the action indicating which range was used to activate it (if possible)
Accessing the Interface
The SmartInterface is supposed to be an extension interface for a Document, i.e. the Document inherits the interface provided that the KTextEditor library in use implements the interface. Use dynamic_cast to access the interface:
Thread safety
The smart interface is designed to be usable in multithreaded environments. If you use the interface from threads other than the main thread, you must lock the smartMutex() whenever you are making a non-const call to a smart object. This allows the text editor to guarantee that the objects will not change when it locks the mutex (for example, when performing layout or rendering). The useRevision function has only effect for the thread calling it. It will store the selected revision in a thread local storage to allow multiple threads to have different views on the same document in respect to the smart interface.
Definition at line 118 of file smartinterface.h.
Constructor & Destructor Documentation
| SmartInterface::SmartInterface | ( | ) |
Definition at line 39 of file smartinterface.cpp.
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virtual |
Definition at line 44 of file smartinterface.cpp.
Member Function Documentation
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pure virtual |
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pure virtual |
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Register a SmartRange tree as providing arbitrary highlighting information, and that it should be rendered on all of the views of a document.
- Parameters
-
topRange the top range of the tree to add supportDynamic support dynamic highlighting attributes
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pure virtual |
Register a SmartRange tree as providing arbitrary highlighting information, and that it should be rendered on the specified view.
- Parameters
-
view view on which to render the highlight topRange the top range of the tree to add supportDynamic support dynamic highlighting attributes
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protectedpure virtual |
Used to notify implementations that an Attribute has gained a dynamic component and needs to be included in mouse and/or cursor tracking.
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protectedpure virtual |
Used to notify implementations that an Attribute has lost all dynamic components and no longer needs to be included in mouse and cursor tracking.
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pure virtual |
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pure virtual |
Clear the highlight ranges from a Document.
| bool SmartInterface::clearOnDocumentReload | ( | ) | const |
Returns whether the smart interface will be cleared on reload of the document.
Defaults to true.
Definition at line 49 of file smartinterface.cpp.
| void SmartInterface::clearRevision | ( | ) |
Clear any previous setting to use a specific revision.
Convenience wrapper for useRevision (-1).
Definition at line 65 of file smartinterface.cpp.
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pure virtual |
Clears or deletes all instances of smart objects, ie:
- deletes all SmartCursors
- deletes all SmartRanges
- clears all arbitrary highlight ranges
- clears all action binding
Deletion occurs without modification to the underlying text.
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pure virtual |
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pure virtual |
Clear the highlight ranges from a View.
- Parameters
-
view view to clear highlights from
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pure virtual |
Retrieve a token representing the current version of the document.
This can be used later to create cursors and ranges as they would have been at this revision.
Once you have finished with the token, release it with releaseRevision().
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pure virtual |
Delete all SmartCursors from this document, with the exception of those cursors currently bound to ranges.
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pure virtual |
Delete all SmartRanges from this document.
This will also delete all cursors currently bound to ranges.
This will not affect any underlying text.
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pure virtual |
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pure virtual |
Return a list of SmartRanges which are currently registered as providing arbitrary highlighting information to all of the views of a document.
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pure virtual |
Creates a new SmartCursor.
You own this object, and may delete it when you are finished with it. Alternatively, you may call the various clear methods, or wait for the Document to be destroyed.
- Parameters
-
position The initial cursor position assumed by the new cursor. If not specified, it will start at position (0, 0). insertBehavior Define whether the cursor should move when text is inserted at the cursor position.
| SmartCursor * SmartInterface::newSmartCursor | ( | int | line, |
| int | column, | ||
| SmartCursor::InsertBehavior | insertBehavior = SmartCursor::MoveOnInsert |
||
| ) |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
Creates a new SmartCursor.
You own this object, and may delete it when you are finished with it. Alternatively, you may call the various clear methods, or wait for the Document to be destroyed.
- Parameters
-
line the line number of the cursor's initial position column the line number of the cursor's initial position insertBehavior Define whether the cursor should move when text is inserted at the cursor position.
Definition at line 76 of file smartinterface.cpp.
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pure virtual |
Creates a new SmartRange.
- Parameters
-
range The initial text range assumed by the new range. parent The parent SmartRange, if this is to be the child of an existing range. insertBehavior Define whether the range should expand when text is inserted adjacent to the range.
| SmartRange * SmartInterface::newSmartRange | ( | const Cursor & | startPosition, |
| const Cursor & | endPosition, | ||
| SmartRange * | parent = 0L, |
||
| SmartRange::InsertBehaviors | insertBehavior = SmartRange::DoNotExpand |
||
| ) |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
Creates a new SmartRange.
- Parameters
-
startPosition The start position assumed by the new range. endPosition The end position assumed by the new range. parent The parent SmartRange, if this is to be the child of an existing range. insertBehavior Define whether the range should expand when text is inserted adjacent to the range.
Definition at line 81 of file smartinterface.cpp.
| SmartRange * SmartInterface::newSmartRange | ( | int | startLine, |
| int | startColumn, | ||
| int | endLine, | ||
| int | endColumn, | ||
| SmartRange * | parent = 0L, |
||
| SmartRange::InsertBehaviors | insertBehavior = SmartRange::DoNotExpand |
||
| ) |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
Creates a new SmartRange.
- Parameters
-
startLine The start line assumed by the new range. startColumn The start column assumed by the new range. endLine The end line assumed by the new range. endColumn The end column assumed by the new range. parent The parent SmartRange, if this is to be the child of an existing range. insertBehavior Define whether the range should expand when text is inserted adjacent to the range.
Definition at line 89 of file smartinterface.cpp.
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pure virtual |
Creates a new SmartRange from pre-existing SmartCursors.
The cursors must not be part of any other range.
- Parameters
-
start Start SmartCursor end End SmartCursor parent The parent SmartRange, if this is to be the child of an existing range. insertBehavior Define whether the range should expand when text is inserted at ends of the range.
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pure virtual |
Release a revision token provided by currentRevision().
You will no longer be able to create cursors and ranges against this revision.
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pure virtual |
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pure virtual |
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pure virtual |
Remove a SmartRange tree from providing arbitrary highlighting information to all of the views of a document.
- Parameters
-
topRange the top range of the tree to remove
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pure virtual |
Remove a SmartRange tree from providing arbitrary highlighting information to a specific view of a document.
- Note
- implementations should not take into account document-bound highlighting ranges when calling this function; it is intended solely to be the counter of addHighlightToView()
- Parameters
-
view view on which the highlight was previously rendered topRange the top range of the tree to remove
| void SmartInterface::setClearOnDocumentReload | ( | bool | clearOnReload | ) |
Specify whether the smart interface should be cleared on reload of the document.
- Parameters
-
clearOnReload set to true to enable clearing of the smart interface on reload (the default).
Definition at line 54 of file smartinterface.cpp.
| QMutex * SmartInterface::smartMutex | ( | ) | const |
Provides access to the recursive mutex used to protect write access to smart interface objects (cursors + ranges and their associated properties).
If you use this interface from a thread other than the main thread, you must lock this mutex whenever you call a non-const function on a smart object.
Definition at line 60 of file smartinterface.cpp.
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Translate the given cursor against the revision specified through useRevision(), using the given insertBehavior.
If no revision is set, simply returns the cursor.
Definition at line 70 of file smartinterface.cpp.
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Translate the given range against the revision specified through useRevision(), using the given insertBehavior.
If no revision is set, simply returns the range.
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Delete a SmartRange without deleting the SmartCursors which make up its start() and end().
First, extract the cursors yourself using:
Then, call this function to delete the SmartRange instance. The underlying text will not be affected.
- Parameters
-
range the range to dissociate from its smart cursors, and delete
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pure virtual |
Tell the smart interface to work against the given revision when creating cursors and ranges.
This has only an effect for the thread calling this function, as this property is stored thread locally. This is not allowed to be called in the main gui thread. If you call it in the main gui thread, fatal error will occur.
- Parameters
-
revision the token representing a revision retrieved by currentRevision(), or -1 to clear any previous setting and use the current document revision.
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pure virtual |
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pure virtual |
Return a list of SmartRanges which are currently registered as providing arbitrary highlighting information to a specific view of a document.
- Note
- implementations should not take into account document-bound highlighting ranges when returning the list; it is intended solely to show highlights added via addHighlightToView()
- Parameters
-
view view to query for the highlight list
The documentation for this class was generated from the following files:
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