From 8daa1bebcec46f54180cc8d6e653f4190d5f84e3 Mon Sep 17 00:00:00 2001
From: xavier
 <xavier@r991  xavier  2010-05-09 20:40:08 +0200 (dim. 09 mai 2010)>
Date: Sun, 11 Mar 2012 16:06:48 +0000
Subject: [PATCH] Cut/Copy/Paste menu entries are now enabled/disabled
 according to the current state of editor, selection and clipboard.

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/branches/0.3@1563 bfdf4180-ca20-0410-9c96-a3a8aa849046
---
 sources/titleblock/qettemplateeditor.cpp |  7 ++++++-
 sources/titleblock/templateview.cpp      | 15 ++++++++++++++-
 sources/titleblock/templateview.h        |  3 ++-
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/sources/titleblock/qettemplateeditor.cpp b/sources/titleblock/qettemplateeditor.cpp
index b3fdaef02..f6bde000e 100644
--- a/sources/titleblock/qettemplateeditor.cpp
+++ b/sources/titleblock/qettemplateeditor.cpp
@@ -452,6 +452,7 @@ void QETTitleBlockTemplateEditor::initWidgets() {
 		SLOT(savePreviewWidthToApplicationSettings(int, int))
 	);
 	connect(undo_stack_, SIGNAL(cleanChanged(bool)), this, SLOT(updateEditorTitle()));
+	connect(QApplication::clipboard(), SIGNAL(dataChanged()), this, SLOT(updateActions()));
 }
 
 /**
@@ -578,9 +579,13 @@ void QETTitleBlockTemplateEditor::updateActions() {
 	
 	bool can_merge;
 	bool can_split;
+	int count;
 	if (!read_only_) {
-		template_edition_area_view_ -> analyzeSelectedCells(&can_merge, &can_split);
+		template_edition_area_view_ -> analyzeSelectedCells(&can_merge, &can_split, &count);
 	}
+	cut_ -> setEnabled(!read_only_ && count);
+	copy_ -> setEnabled(count);
+	paste_ -> setEnabled(!read_only_ && count && template_edition_area_view_ -> mayPaste());
 	merge_cells_ -> setEnabled(!read_only_ && can_merge);
 	split_cell_ -> setEnabled(!read_only_ && can_split);
 }
diff --git a/sources/titleblock/templateview.cpp b/sources/titleblock/templateview.cpp
index eced55200..11ec727c2 100644
--- a/sources/titleblock/templateview.cpp
+++ b/sources/titleblock/templateview.cpp
@@ -168,6 +168,15 @@ QList<TitleBlockCell *> TitleBlockTemplateView::copy() {
 	return(copied_cells);
 }
 
+/**
+	@return true if the content of the clipboard looks interesting
+*/
+bool TitleBlockTemplateView::mayPaste() {
+	// retrieve the clipboard content
+	QClipboard *clipboard = QApplication::clipboard();
+	return(clipboard -> text().contains("<titleblocktemplate-partial"));
+}
+
 /**
 	Import the cells described in the clipboard.
 */
@@ -385,8 +394,9 @@ TitleBlockTemplateCellsSet TitleBlockTemplateView::cells(const QRectF &rect) con
 /**
 	@param can_merge If non-zero, will be changed to reflect whether selected cells may be merged
 	@param can_merge If non-zero, will be changed to reflect whether selected cells may be splitted
+	@param count     If non-zero, will be changed to reflect the number of selected cells
 */
-void TitleBlockTemplateView::analyzeSelectedCells(bool *can_merge, bool *can_split) {
+void TitleBlockTemplateView::analyzeSelectedCells(bool *can_merge, bool *can_split, int *count) {
 	if (!can_merge && !can_split) return;
 	
 	if (!tbtemplate_) {
@@ -404,6 +414,9 @@ void TitleBlockTemplateView::analyzeSelectedCells(bool *can_merge, bool *can_spl
 	if (can_split) {
 		*can_split = SplitCellsCommand::canSplit(selected_cells, tbtemplate_);
 	}
+	if (count) {
+		*count = selectedCellsSet().count();
+	}
 }
 
 /**
diff --git a/sources/titleblock/templateview.h b/sources/titleblock/templateview.h
index f71b837db..a6cef31e9 100644
--- a/sources/titleblock/templateview.h
+++ b/sources/titleblock/templateview.h
@@ -46,7 +46,7 @@ class TitleBlockTemplateView : public QGraphicsView {
 	virtual QList<TitleBlockCell *> selectedCells() const;
 	virtual TitleBlockTemplateCellsSet selectedCellsSet() const;
 	virtual TitleBlockTemplateCellsSet cells(const QRectF &) const;
-	virtual void analyzeSelectedCells(bool *, bool *);
+	virtual void analyzeSelectedCells(bool *, bool *, int *);
 	virtual QSizeF templateSize() const;
 	virtual qreal templateWidth() const;
 	virtual qreal templateHeight() const;
@@ -60,6 +60,7 @@ class TitleBlockTemplateView : public QGraphicsView {
 	void zoomReset();
 	QList<TitleBlockCell *> cut();
 	QList<TitleBlockCell *> copy();
+	bool mayPaste();
 	void paste();
 	void addColumnBefore();
 	void addRowBefore();