undo infrastructure: collect the texts for the executed commands

This creates a single string with all the undo texts that are on the stack.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

commands/command.h

@@ -20,6 +20,7 @@ void setClean();			// Call after save - this marks a state where no changes need
 bool isClean();				// Any changes need to be saved?
 QAction *undoAction(QObject *parent);	// Create an undo action.
 QAction *redoAction(QObject *parent);	// Create an redo action.
+QString changesMade();			// return a string with the texts from all commands on the undo stack -> for commit message
 
 // 2) Dive-list related commands
 

commands/command_base.cpp

@@ -45,6 +45,16 @@ QAction *redoAction(QObject *parent)
 	return undoStack.createRedoAction(parent, QCoreApplication::translate("Command", "&Redo"));
 }
 
+// return a string that can be used for the commit message and should list the changes that
+// were made to the dive list
+QString changesMade()
+{
+	QString changeTexts;
+	for (int i = 0; i < undoStack.index(); i++)
+		changeTexts += undoStack.text(i) + "\n";
+	return changeTexts;
+}
+
 bool execute(Base *cmd)
 {
 	if (cmd->workToBeDone()) {