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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit460c52653ab0dcca6f19a4f492ed2c5e4e963ab0 (patch)
tree67208f7c145782a7e90b123b982ca78d88cc2c87 /kpilot/lib/actionQueue.h
downloadtdepim-460c52653ab0dcca6f19a4f492ed2c5e4e963ab0.tar.gz
tdepim-460c52653ab0dcca6f19a4f492ed2c5e4e963ab0.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+#ifndef _KPILOT_ACTIONQUEUE_H
+#define _KPILOT_ACTIONQUEUE_H
+/*
+**
+** Copyright (C) 1998-2001,2003 by Dan Pilone
+** Copyright (C) 2003-2004 Reinhold Kainhofer <[email protected]>
+**
+*/
+
+/*
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program in a file called COPYING; if not, write to
+** the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+** MA 02110-1301, USA.
+*/
+
+/*
+** Bug reports and questions can be sent to [email protected]
+*/
+
+#include <qptrqueue.h>
+
+#include "syncAction.h"
+
+/** @file
+* This file defines the ActionQueue.
+*
+* This used to be called SyncStack, and while a stack is cool
+* for some things, it actually rather confuses the issue because
+* you _use_ this class for specifying "do this, then that, then ..."
+* and in program code you need to reverse that order when adding
+* items to a stack. So now it's a Queue, FIFO, and program
+* code looks more normal.
+*/
+
+/**
+* The ActionQueue is a meta-action, which handles running a bunch of
+* SyncActions in sequence. It is a SyncAction itself, so it can even
+* be queued on another ActionQueue.
+*
+* An ActionQueue is constructed with a @p device. As usual, you should
+* connect the device's deviceReady() signal with the exec() slot --
+* or something to that effect. The ActionQueue will then run all the
+* actions in the queue in sequence.
+*
+*/
+KDE_EXPORT class ActionQueue : public SyncAction
+{
+Q_OBJECT
+public:
+ /**
+ * Constructor. Pass in a KPilot device link for it to act on.
+ * It is legal to pass in 0 (NULL) as a device. Ownership of
+ * the device is unchanged.
+ */
+ ActionQueue(KPilotLink *device);
+
+ /** Destructor. */
+ virtual ~ActionQueue();
+
+ /** Is the queue empty? Returns @c true if it is. */
+ bool isEmpty() const
+ {
+ return SyncActionQueue.isEmpty();
+ };
+
+ /**
+ * You can push your own action @p a onto the queue. Ownership
+ * of the action is given to the ActionQueue object.
+ */
+ void addAction(SyncAction *a)
+ {
+ SyncActionQueue.enqueue(a);
+ };
+
+public:
+ /*
+ * Call these queue*() functions to append standard functional
+ * blocks. You should at least call queueInit() and
+ * queueCleanup() to add the welcome and cleanup actions to
+ * the queue (unless you do that yourself.)
+ *
+ * For queueInit, a WelcomeAction is added.
+ * For queueConduits, whatever is relevant for the conduits
+ * can be used, usually things in the FlagMask and ActionMask.
+ * The list of conduits in @p conduits is queued automatically.
+ */
+
+ /**
+ * Initialize the queue. This empties it out and adds a
+ * welcome action (see WelcomeAction in actions.h) so that
+ * the user knows what is happening when the ActionQueue
+ * begins to execute. Equivalent to
+ * @code
+ * clear(); addAction(new WelcomeAction);
+ * @endcode
+ */
+ void queueInit();
+
+ /**
+ * Queue a (series) of conduits @p conduits with a given
+ * sync mode @p mode. Each of the conduits named is called
+ * through a ConduitProxy object which handles loading the
+ * conduit's shared library and creating the actual SyncAction
+ * for that conduit. Actions named "internal_*" are silently
+ * ignored since those names are used by KPilot internally
+ * for administrative purposes.
+ */
+ void queueConduits(const QStringList &conduits,
+ const SyncAction::SyncMode &mode);
+
+ /**
+ * Convenience function for adding a cleanup action (see
+ * CleanupAction in actions.h) to the queue. Should be the
+ * last action added to the queue because a HotSync can only
+ * have @em one cleanup.
+ */
+ void queueCleanup();
+
+protected:
+ /**
+ * Remove all the actions from the queue and delete them
+ * (the queue owns the actions, after all).
+ */
+ void clear();
+
+ /**
+ * Dequeue the next action in the queue, ready for processing.
+ * This takes the action off the queue, so remember to delete it
+ * eventually.
+ */
+ SyncAction *nextAction()
+ {
+ return SyncActionQueue.dequeue();
+ };
+
+ /** Reimplemented from SyncAction. */
+ virtual bool exec();
+
+protected slots:
+ /**
+ * When one action finishes, start the next one.
+ */
+ void actionCompleted(SyncAction *);
+
+private:
+ /** A queue of actions to take. */
+ QPtrQueue < SyncAction > SyncActionQueue;
+};
+
+
+#endif