remove undo stack by diagram, and add single undo stack for project

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@2706 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/diagram.cpp

@@ -53,7 +53,6 @@ Diagram::Diagram(QObject *parent) :
 	read_only_(false),
 	diagram_qet_version_(-1)
 {
-	undo_stack_ = new QUndoStack();
 	qgi_manager_ = new QGIManager(this);
 	setBackgroundBrush(Qt::white);
 	conductor_setter_ = new QGraphicsLineItem(0, 0);
@@ -83,8 +82,8 @@ Diagram::Diagram(QObject *parent) :
 	Destructeur
 */
 Diagram::~Diagram() {
-	// suppression de la liste des annulations - l'undo stack fait appel au qgimanager pour supprimer certains elements
-	delete undo_stack_;
+	// clear undo stack to prevent errors, because contains pointers to this diagram and is elements.
+	undoStack().clear();
 	// suppression du QGIManager - tous les elements qu'il connait sont supprimes
 	delete qgi_manager_;
 	// remove of conductor setter
@@ -651,7 +650,6 @@ bool Diagram::fromXml(QDomElement &document, QPointF position, bool consider_inf
 void Diagram::write() {
 	qDebug() << qPrintable(QString("Diagram::write() : saving changes from diagram \"%1\" [%2]").arg(title()).arg(QET::pointerString(this)));
 	write(toXml().documentElement());
-	undoStack().setClean();
 }
 
 /**
@@ -828,7 +826,7 @@ void Diagram::titleChanged(const QString &title) {
 */
 void Diagram::diagramTextChanged(DiagramTextItem *text_item, const QString &old_text, const QString &new_text) {
 	if (!text_item) return;
-	undo_stack_ -> push(new ChangeDiagramTextCommand(text_item, old_text, new_text));
+	undoStack().push(new ChangeDiagramTextCommand(text_item, old_text, new_text));
 }
 
 /**

sources/diagram.h

@@ -25,6 +25,7 @@
 #include "exportproperties.h"
 #include "qgimanager.h"
 #include "numerotationcontext.h"
+#include "qetproject.h"
 
 class Conductor;
 class CustomElement;
@@ -86,7 +87,6 @@ class Diagram : public QGraphicsScene {
 	bool draw_grid_;
 	bool use_border_;
 	QGIManager *qgi_manager_;
-	QUndoStack *undo_stack_;
 	bool draw_terminals_;
 	bool draw_colored_conductors_;
 	QDomDocument xml_document_;
@@ -323,7 +323,7 @@ inline Diagram::BorderOptions Diagram::borderOptions() {
 
 /// @return the diagram undo stack
 inline QUndoStack &Diagram::undoStack() {
-	return(*undo_stack_);
+	return *(project()->undoStack());
 }
 
 /// @return the diagram graphics item manager

sources/diagramview.cpp

@@ -88,7 +88,6 @@ DiagramView::DiagramView(Diagram *diagram, QWidget *parent) : QGraphicsView(pare
 	connect(&(scene -> border_and_titleblock), SIGNAL(borderChanged(QRectF, QRectF)), this, SLOT(adjustSceneRect()));
 	connect(&(scene -> border_and_titleblock), SIGNAL(displayChanged()),              this, SLOT(adjustSceneRect()));
 	connect(&(scene -> border_and_titleblock), SIGNAL(diagramTitleChanged(const QString &)), this, SLOT(updateWindowTitle()));
-	connect(&(scene -> undoStack()), SIGNAL(cleanChanged(bool)), this, SLOT(updateWindowTitle()));
 	connect(diagram, SIGNAL(editElementRequired(ElementsLocation)), this, SIGNAL(editElementRequired(ElementsLocation)));
 	connect(diagram, SIGNAL(findElementRequired(ElementsLocation)), this, SIGNAL(findElementRequired(ElementsLocation)));
 	
@@ -772,19 +771,7 @@ void DiagramView::adjustSceneRect() {
 	Met a jour le titre du widget
 */
 void DiagramView::updateWindowTitle() {
-	QString view_title(title());
-	
-	// verifie si le document a ete modifie
-	bool modified_diagram = !(scene -> undoStack().isClean());
-	
-	// specifie le titre du widget
-	setWindowTitle(view_title + " [*]");
-	setWindowModified(modified_diagram);
-	
-	// emet le signal titleChanged en ajoutant manuellement [*] si le schema a ete modifie
-	QString emitted_title = view_title;
-	if (modified_diagram) emitted_title += " [*]";
-	emit(titleChanged(this, emitted_title));
+	emit(titleChanged(this, title()));
 }
 
 /**

sources/projectview.cpp

@@ -176,9 +176,9 @@ bool ProjectView::tryClosing() {
 	//   - or specify what is to be saved, i.e. they choose whether they wants to
 	// save/give up/remove diagrams considered as modified.
 	int user_input = tryClosingDiagrams();
-	if (user_input == QDialogButtonBox::RejectRole) {
+	if (user_input == QMessageBox::Cancel) {
 		return(false); // the closing process was cancelled
-	} else if (user_input == QDialogButtonBox::DestructiveRole) {
+	} else if (user_input == QMessageBox::Discard) {
 		return(true); // all modifications were discarded
 	}
 	
@@ -222,55 +222,34 @@ bool ProjectView::tryClosingElementEditors() {
 }
 
 /**
-	Un projet comporte 0 a n schemas.
-	Cette methode parcourt les schemas et demande a l'utilisateur s'il veut
-	enregistrer les schemas modifies afin de les fermer. L'utilisateur peut
-	refuser la fermeture d'un schema.
-	Si un schema a ete ajoute sans jamais etre modifie, cette methode demande a
-	l'utilisateur s'il souhaite l'enlever.
-	@return true si tous les schemas peuvent etre fermes, false sinon
-*/
+ * @brief ProjectView::tryClosingDiagrams
+ * try to close this project, if diagram or project option are changed
+ * a dialog ask if user want to save the modification.
+ * @return the answer of dialog or discard if no change.
+ */
 int ProjectView::tryClosingDiagrams() {
-	if (!project_) return(QDialogButtonBox::DestructiveRole);
-	
-	bool project_modified = project_ -> projectOptionsWereModified();
-	QList<Diagram *> modified_diagrams = getDiagrams(AllDiagrams | ModifiedDiagramsOnly);
-	bool has_filepath = !project_ -> filePath().isEmpty();
-	if (!project_modified && !modified_diagrams.count() && has_filepath) {
+	if (!project_) return(QMessageBox::Discard);
+
+	if (!project()->projectOptionsWereModified() &&
+		project()->undoStack()->isClean() &&
+		!project()->filePath().isEmpty()) {
 		// nothing was modified, and we have a filepath, i.e. everything was already
 		// saved, i.e we can close the project right now
-		return(QDialogButtonBox::DestructiveRole);
+		return(QMessageBox::Discard);
+	}
+
+	int close_dialog = QMessageBox::question(this, project()->title(),
+								   tr("Le projet \340 \351t\351 modifi\351.\n"
+									  "Voulez-vous enregistrer les modifications ?"),
+								   QMessageBox::Save | QMessageBox::Discard
+								   | QMessageBox::Cancel,
+								   QMessageBox::Save);
+
+	if (close_dialog == QMessageBox::Save) {
+		saveDiagrams(project()->diagrams());
 	}
 	
-	CloseDiagramsDialog close_dialog(modified_diagrams, this);
-	if (!project_ -> title().isEmpty()) {
-		close_dialog.setWindowTitle(
-			QString(
-				tr(
-					"Fermer le projet \"%1\"",
-					"project closing dialog title -- %1 is a project title"
-				)
-			).arg(project_ -> title())
-		);
-	}
-	connect(&close_dialog, SIGNAL(showDiagram(Diagram*)), this, SLOT(showDiagram(Diagram*)));
-	if (close_dialog.exec() == QDialog::Rejected) {
-		return(QDialogButtonBox::RejectRole);
-	}
-	
-	if (close_dialog.answer() == QDialogButtonBox::AcceptRole) {
-		// save diagrams the user marked as to be saved
-		QList<Diagram *> to_save = close_dialog.diagramsByAction(CloseDiagramsDialog::Save);
-		saveDiagrams(to_save);
-		
-		// remove diagrams the user marked as to be removed
-		QList<Diagram *> to_close = close_dialog.diagramsByAction(CloseDiagramsDialog::Remove);
-		foreach (Diagram *diagram, to_close) {
-			removeDiagram(diagram);
-		}
-	}
-	
-	return(close_dialog.answer());
+	return(close_dialog);
 }
 
 /**
@@ -558,7 +537,7 @@ void ProjectView::exportProject() {
 	@return a QETResult object reflecting the situation
 */
 QETResult ProjectView::save() {
-	return(doSave(AllDiagrams | ModifiedDiagramsOnly));
+	return(doSave(AllDiagrams));
 }
 
 /**
@@ -607,6 +586,7 @@ QETResult ProjectView::doSave(ProjectSaveOptions options) {
 	// write to file
 	QETResult result = project_ -> write();
 	updateWindowTitle();
+	if (options == AllDiagrams) project()->undoStack()->clear();
 	return(result);
 }
 

sources/qetdiagrameditor.cpp

@@ -119,7 +119,7 @@ QETDiagramEditor::QETDiagramEditor(const QStringList &files, QWidget *parent) :
 	
 	// connexions signaux / slots pour une interface sensee
 	connect(&workspace,                SIGNAL(subWindowActivated(QMdiSubWindow *)), this, SLOT(slot_updateWindowsMenu()));
-	connect(&workspace,                SIGNAL(subWindowActivated(QMdiSubWindow *)), this, SLOT(slot_updateActions()));
+	connect(&workspace,                SIGNAL(subWindowActivated(QMdiSubWindow *)), this, SLOT(slot_updateUndoStack()));
 	connect(QApplication::clipboard(), SIGNAL(dataChanged()),              this, SLOT(slot_updatePasteAction()));
 	
 	// lecture des parametres
@@ -1158,23 +1158,24 @@ void QETDiagramEditor::slot_updateActions() {
 	prj_nomenclature  -> setVisible(false);
 #endif
 	
-	// affiche les actions correspondant au diagram view en cours
-	if (dv) {
-		if (can_update_actions) {
-			undo_group.setActiveStack(&(dv -> diagram() -> undoStack()));
-			undo -> setEnabled(undo_group.canUndo());
-			redo -> setEnabled(undo_group.canRedo());
-		}
-	} else {
-		undo -> setEnabled(false);
-		redo -> setEnabled(false);
-	}
-	
 	slot_updateModeActions();
 	slot_updatePasteAction();
 	slot_updateComplexActions();
 }
 
+/**
+ * @brief QETDiagramEditor::slot_updateUndoStack
+ * Update the undo stack view
+ */
+void QETDiagramEditor::slot_updateUndoStack() {
+	ProjectView *pv = currentProject();
+	if (pv && can_update_actions) {
+		undo_group.setActiveStack(pv->project()->undoStack());
+		undo -> setEnabled(undo_group.canUndo());
+		redo -> setEnabled(undo_group.canRedo());
+	}
+}
+
 /**
 	gere les actions ayant des besoins precis pour etre active ou non
 	Cette methode ne fait rien si aucun document n'est ouvert
@@ -1821,6 +1822,7 @@ void QETDiagramEditor::diagramIsAboutToBeRemoved(DiagramView *dv) {
 void QETDiagramEditor::diagramWasRemoved(DiagramView *dv) {
 	Q_UNUSED(dv);
 	can_update_actions = true;
+	slot_updateUndoStack();
 }
 
 /**

sources/qetdiagrameditor.h

@@ -111,6 +111,7 @@ class QETDiagramEditor : public QETMainWindow {
 	void slot_setSelectionMode();
 	void slot_setVisualisationMode();
 	void slot_updateActions();
+	void slot_updateUndoStack();
 	void slot_updateModeActions();
 	void slot_updateComplexActions();
 	void slot_updatePasteAction();

sources/qetproject.cpp

@@ -62,6 +62,9 @@ QETProject::QETProject(int diagrams, QObject *parent) :
 	// une categorie dediee aux elements integres automatiquement
 	ensureIntegrationCategoryExists();
 	setupTitleBlockTemplatesCollection();
+
+	undo_stack_ = new QUndoStack();
+	connect(undo_stack_, SIGNAL(cleanChanged(bool)), this, SLOT(undoStackChanged(bool)));
 }
 
 /**
@@ -102,6 +105,9 @@ QETProject::QETProject(const QString &path, QObject *parent) :
 	if (!project_file_info.isWritable()) {
 		setReadOnly(true);
 	}
+
+	undo_stack_ = new QUndoStack();
+	connect(undo_stack_, SIGNAL(cleanChanged(bool)), this, SLOT(undoStackChanged(bool)));
 }
 
 /**
@@ -123,6 +129,9 @@ QETProject::QETProject(const QDomElement &xml_element, QObject *parent) :
 	readProjectXml();
 	
 	setupTitleBlockTemplatesCollection();
+
+	undo_stack_ = new QUndoStack();
+	connect(undo_stack_, SIGNAL(cleanChanged(bool)), this, SLOT(undoStackChanged(bool)));
 }
 
 /**
@@ -145,6 +154,7 @@ QETProject::~QETProject() {
 		delete diagram;
 	}
 	// qDebug() << diagrams_;
+	delete undo_stack_;
 }
 
 /**

sources/qetproject.h

@@ -118,6 +118,7 @@ class QETProject : public QObject {
 	bool diagramsWereModified();
 	DiagramContext projectProperties();
 	void setProjectProperties(const DiagramContext &);
+	QUndoStack* undoStack() {return undo_stack_;}
 	
 	public slots:
 	void componentWritten();
@@ -143,6 +144,7 @@ class QETProject : public QObject {
 	void updateDiagramsTitleBlockTemplate(TitleBlockTemplatesCollection *, const QString &);
 	void removeDiagramsTitleBlockTemplate(TitleBlockTemplatesCollection *, const QString &);
 	void usedTitleBlockTemplateChanged(const QString &);
+	void undoStackChanged (bool a) {if (!a) setModified(true);}
 	
 	private:
 	void setupTitleBlockTemplatesCollection();
@@ -193,6 +195,8 @@ class QETProject : public QObject {
 	TitleBlockTemplatesProjectCollection titleblocks_;
 	/// project-wide variables that will be made available to child diagrams
 	DiagramContext project_properties_;
+	/// undo stack for this project
+	QUndoStack *undo_stack_;
 };
 Q_DECLARE_METATYPE(QETProject *)
 #endif