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Undo: isolate undo-commands

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This refactors the undo-commands (which are now only "commands").

- Move everything in namespace Command. This allows shortening of
  names without polluting the global namespace. Moreover, the prefix
  Command:: will immediately signal that the undo-machinery is
  invoked. This is more terse than UndoCommands::instance()->...
- Remove the Undo in front of the class-names. Creating an "UndoX"
  object to do "X" is paradoxical.
- Create a base class for all commands that defines the Qt-translation
  functions. Thus all translations end up in the "Command" context.
- Add a workToBeDone() function, which signals whether this should be
  added to the UndoStack. Thus the caller doesn't have to check itself
  whether this any work will be done. Note: Qt5.9 introduces "setObsolete"
  which does the same.
- Split into public and internal header files. In the public header
  file only export the function calls, thus hiding all implementation
  details from the caller.
- Split in different translation units: One for the stubs, one for
  the base classes and one for groups of commands. Currently, there
  is only one class of commands: divelist-commands.
- Move the undoStack from the MainWindow class into commands_base.cpp.
  If we want to implement MDI, this can easily be moved into an
  appropriate Document class.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2018-07-23 23:41:23 +02:00 • committed by Dirk Hohndel
parent f427226b3b
commit 43c3885249
16 changed files with 470 additions and 1175 deletions
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17
desktop-widgets/mainwindow.cpp
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@ -37,6 +37,7 @@
#include "core/settings/qPrefTechnicalDetails.h"
#include "desktop-widgets/about.h"
#include "desktop-widgets/command.h"
#include "desktop-widgets/divecomputermanagementdialog.h"
#include "desktop-widgets/divelistview.h"
#include "desktop-widgets/divelogexportdialog.h"
@ -48,7 +49,6 @@
#include "desktop-widgets/mapwidget.h"
#include "desktop-widgets/subsurfacewebservices.h"
#include "desktop-widgets/tab-widgets/maintab.h"
#include "desktop-widgets/undocommands.h"
#include "desktop-widgets/updatemanager.h"
#include "desktop-widgets/usersurvey.h"
@ -258,9 +258,8 @@ MainWindow::MainWindow() : QMainWindow(),
memset(&what, 0, sizeof(what));
updateManager = new UpdateManager(this);
undoStack = new QUndoStack(this);
QAction *undoAction = undoStack->createUndoAction(this, tr("&Undo"));
QAction *redoAction = undoStack->createRedoAction(this, tr("&Redo"));
QAction *undoAction = Command::undoAction(this);
QAction *redoAction = Command::redoAction(this);
undoAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Z));
redoAction->setShortcut(QKeySequence(Qt::CTRL + Qt::SHIFT + Qt::Key_Z));
QList<QAction*>undoRedoActions;
@ -620,7 +619,7 @@ void MainWindow::on_actionCloudstorageopen_triggered()
process_loaded_dives();
if (autogroup)
autogroup_dives();
undoStack->clear();
Command::clear();
hideProgressBar();
refreshDisplay();
}
@ -1075,9 +1074,9 @@ void MainWindow::on_actionAutoGroup_triggered()
{
set_autogroup(ui.actionAutoGroup->isChecked());
if (autogroup)
undoStack->push(new UndoAutogroupDives);
Command::autogroupDives();
else
undoStack->push(new UndoRemoveAutogenTrips);
Command::removeAutogenTrips();
refreshDisplay();
mark_divelist_changed(true);
}
@ -1745,7 +1744,7 @@ void MainWindow::importFiles(const QStringList fileNames)
process_imported_dives(&table, false, false);
if (autogroup)
autogroup_dives();
undoStack->clear();
Command::clear();
refreshDisplay();
}
@ -1770,7 +1769,7 @@ void MainWindow::loadFiles(const QStringList fileNames)
process_loaded_dives();
if (autogroup)
autogroup_dives();
undoStack->clear();
Command::clear();
refreshDisplay();