QgsComposerItemCommand Class Reference

Undo command to undo/redo all composer item related changes. More...

#include <qgscomposeritemcommand.h>

Inheritance diagram for QgsComposerItemCommand:

Collaboration diagram for QgsComposerItemCommand:

Public Member Functions
	QgsComposerItemCommand (QgsComposerItem *item, const QString &text, QUndoCommand *parent=0)
virtual	~QgsComposerItemCommand ()
void	undo ()
	Reverses the command.
void	redo ()
	Replays the command.
void	savePreviousState ()
	Saves current item state as previous state.
void	saveAfterState ()
	Saves current item state as after state.
QDomDocument	previousState () const
QDomDocument	afterState () const
bool	containsChange () const
	Returns true if previous state and after state are valid and different.
const QgsComposerItem *	item () const

Protected Member Functions
void	saveState (QDomDocument &stateDoc) const
void	restoreState (QDomDocument &stateDoc) const

Protected Attributes
QgsComposerItem *	mItem
	Target item of the command.
QDomDocument	mPreviousState
	XML that saves the state before executing the command.
QDomDocument	mAfterState
	XML containing the state after executing the command.
bool	mFirstRun
	Flag to prevent the first redo() if the command is pushed to the undo stack.

Detailed Description

Undo command to undo/redo all composer item related changes.

Definition at line 27 of file qgscomposeritemcommand.h.

Constructor & Destructor Documentation

QgsComposerItemCommand::QgsComposerItemCommand	(	QgsComposerItem *	item,
		const QString &	text,
		QUndoCommand *	parent = 0
	)

Definition at line 22 of file qgscomposeritemcommand.cpp.

QgsComposerItemCommand::~QgsComposerItemCommand ( )

virtual

Definition at line 27 of file qgscomposeritemcommand.cpp.

Member Function Documentation

QDomDocument QgsComposerItemCommand::afterState ( ) const

inline

Definition at line 44 of file qgscomposeritemcommand.h.

Referenced by QgsComposerMergeCommand::mergeWith().

bool QgsComposerItemCommand::containsChange

(

)

const

Returns true if previous state and after state are valid and different.

Definition at line 46 of file qgscomposeritemcommand.cpp.

References mAfterState, and mPreviousState.

Referenced by QgsComposition::endCommand().

const QgsComposerItem* QgsComposerItemCommand::item ( ) const

inline

Definition at line 49 of file qgscomposeritemcommand.h.

Referenced by QgsComposerMergeCommand::mergeWith().

QDomDocument QgsComposerItemCommand::previousState ( ) const

inline

Definition at line 43 of file qgscomposeritemcommand.h.

void QgsComposerItemCommand::redo

(

)

Replays the command.

Definition at line 36 of file qgscomposeritemcommand.cpp.

References mAfterState, mFirstRun, and restoreState().

void QgsComposerItemCommand::restoreState ( QDomDocument &  stateDoc ) const

protected

Definition at line 72 of file qgscomposeritemcommand.cpp.

References QgsProject::dirty(), QgsProject::instance(), mItem, QgsComposerItem::readXML(), and QgsComposerItem::repaint().

Referenced by redo(), and undo().

void QgsComposerItemCommand::saveAfterState

(

)

Saves current item state as after state.

Definition at line 56 of file qgscomposeritemcommand.cpp.

References mAfterState, and saveState().

Referenced by QgsComposition::alignSelectedItemsBottom(), QgsComposition::alignSelectedItemsHCenter(), QgsComposition::alignSelectedItemsLeft(), QgsComposition::alignSelectedItemsRight(), QgsComposition::alignSelectedItemsTop(), QgsComposition::alignSelectedItemsVCenter(), QgsComposition::endCommand(), and QgsComposition::updateZValues().

void QgsComposerItemCommand::savePreviousState

(

)

Saves current item state as previous state.

Definition at line 51 of file qgscomposeritemcommand.cpp.

References mPreviousState, and saveState().

Referenced by QgsComposition::alignSelectedItemsBottom(), QgsComposition::alignSelectedItemsHCenter(), QgsComposition::alignSelectedItemsLeft(), QgsComposition::alignSelectedItemsRight(), QgsComposition::alignSelectedItemsTop(), QgsComposition::alignSelectedItemsVCenter(), QgsComposition::beginCommand(), and QgsComposition::updateZValues().

void QgsComposerItemCommand::saveState ( QDomDocument &  stateDoc ) const

protected

Definition at line 61 of file qgscomposeritemcommand.cpp.

References mItem, and QgsComposerItem::writeXML().

Referenced by saveAfterState(), and savePreviousState().

void QgsComposerItemCommand::undo

(

)

Reverses the command.

Definition at line 31 of file qgscomposeritemcommand.cpp.

References mPreviousState, and restoreState().

Member Data Documentation

QDomDocument QgsComposerItemCommand::mAfterState

protected

XML containing the state after executing the command.

Definition at line 57 of file qgscomposeritemcommand.h.

Referenced by containsChange(), QgsComposerMergeCommand::mergeWith(), redo(), and saveAfterState().

bool QgsComposerItemCommand::mFirstRun

protected

Flag to prevent the first redo() if the command is pushed to the undo stack.

Definition at line 60 of file qgscomposeritemcommand.h.

Referenced by redo().

QgsComposerItem* QgsComposerItemCommand::mItem

protected

Target item of the command.

Definition at line 53 of file qgscomposeritemcommand.h.

Referenced by QgsComposerMergeCommand::mergeWith(), restoreState(), and saveState().

QDomDocument QgsComposerItemCommand::mPreviousState

protected

XML that saves the state before executing the command.

Definition at line 55 of file qgscomposeritemcommand.h.

Referenced by containsChange(), savePreviousState(), and undo().

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

• /tmp/buildd/qgis-2.0.1/src/core/composer/qgscomposeritemcommand.h
• /tmp/buildd/qgis-2.0.1/src/core/composer/qgscomposeritemcommand.cpp