move polling system to Folder where it belongs

src/mirall/folder.cpp

@@ -3,17 +3,22 @@
 #include <QDesktopServices>
 #include <QIcon>
 #include <QMutexLocker>
+#include <QTimer>
 #include <QUrl>
 
 #include "mirall/constants.h"
 #include "mirall/folder.h"
 #include "mirall/folderwatcher.h"
 
+#define DEFAULT_POLL_INTERVAL_SEC 30
+
 namespace Mirall {
 
 Folder::Folder(const QString &path, QObject *parent)
     : QObject(parent),
-      _path(path)
+      _path(path),
+      _pollTimer(new QTimer(this)),
+      _pollInterval(DEFAULT_POLL_INTERVAL_SEC)
 {
     _openAction = new QAction(QIcon(FOLDER_ICON), path, this);
     _openAction->setIconVisibleInMenu(true);
@@ -21,6 +26,11 @@ Folder::Folder(const QString &path, QObject *parent)
 
     QObject::connect(_openAction, SIGNAL(triggered(bool)), SLOT(slotOpenFolder()));
 
+    _pollTimer->setSingleShot(false);
+    _pollTimer->setInterval(pollInterval() * 1000);
+    QObject::connect(_pollTimer, SIGNAL(timeout()), this, SLOT(slotPollTimerTimeout()));
+    _pollTimer->start();
+
     _watcher = new Mirall::FolderWatcher(path, this);
     QObject::connect(_watcher, SIGNAL(folderChanged(const QStringList &)),
                      SLOT(slotChanged(const QStringList &)));
@@ -46,6 +56,23 @@ QString Folder::path() const
     return _path;
 }
 
+int Folder::pollInterval() const
+{
+    return _pollInterval;
+}
+
+void Folder::setPollInterval(int seconds)
+{
+    _pollInterval = seconds;
+}
+
+void Folder::slotPollTimerTimeout()
+{
+    qDebug() << "* Polling remote for changes. Ignoring all pending events until now";
+    _watcher->clearPendingEvents();
+    startSync(QStringList());
+}
+
 void Folder::slotChanged(const QStringList &pathList)
 {
     startSync(pathList);

src/mirall/folder.h

@@ -6,6 +6,7 @@
 #include <QStringList>
 
 class QAction;
+class QTimer;
 
 namespace Mirall {
 
@@ -27,8 +28,13 @@ public:
     QAction *openAction() const;
 
     /**
-     * starts a sync operation
-     * requests are serialized
+     * Starts a sync operation
+     *
+     * If the list of changed files is known, it is passed.
+     *
+     * If the list of changed files is empty, the folder
+     * implementation should figure it by itself of
+     * perform a full scan of changes
      */
     virtual void startSync(const QStringList &pathList) = 0;
 
@@ -38,6 +44,19 @@ public:
      */
     virtual bool isBusy() const = 0;
 
+protected:
+    /**
+     * The minimum amounts of seconds to wait before
+     * doing a full sync to see if the remote changed
+     */
+    int pollInterval() const;
+
+    /**
+     * Sets minimum amounts of seconds that will separate
+     * poll intervals
+     */
+    void setPollInterval(int seconds);
+
 signals:
 
     void syncStarted();
@@ -45,11 +64,19 @@ signals:
 
 protected:
     FolderWatcher *_watcher;
+
 private:
+
     QString _path;
     QAction *_openAction;
+    // poll timer for remote syncs
+    QTimer *_pollTimer;
+    int _pollInterval;
+
 protected slots:
 
+    void slotPollTimerTimeout();
+
     /* called when the watcher detect a list of changed
        paths */
     void slotChanged(const QStringList &pathList);

src/mirall/folderwatcher.cpp

@@ -20,7 +20,6 @@ static const uint32_t standard_event_mask =
 /* minimum amount of seconds between two
    events  to consider it a new event */
 #define DEFAULT_EVENT_INTERVAL_SEC 5
-#define DEFAULT_POLL_INTERVAL_SEC 30
 
 namespace Mirall {
 
@@ -28,10 +27,8 @@ FolderWatcher::FolderWatcher(const QString &root, QObject *parent)
     : QObject(parent),
       _eventsEnabled(true),
       _eventInterval(DEFAULT_EVENT_INTERVAL_SEC),
-      _pollInterval(DEFAULT_POLL_INTERVAL_SEC),
       _root(root),
       _processTimer(new QTimer(this)),
-      _pollTimer(new QTimer(this)),
       _lastMask(0)
 {
     // this is not the best place for this
@@ -40,11 +37,6 @@ FolderWatcher::FolderWatcher(const QString &root, QObject *parent)
     _processTimer->setSingleShot(true);
     QObject::connect(_processTimer, SIGNAL(timeout()), this, SLOT(slotProcessTimerTimeout()));
 
-    _pollTimer->setSingleShot(false);
-    _pollTimer->setInterval(pollInterval() * 1000);
-    QObject::connect(_pollTimer, SIGNAL(timeout()), this, SLOT(slotPollTimerTimeout()));
-    _pollTimer->start();
-
     _inotify = new INotify(standard_event_mask);
     slotAddFolderRecursive(root);
     QObject::connect(_inotify, SIGNAL(notifyEvent(int, int, const QString &)),
@@ -92,6 +84,13 @@ void FolderWatcher::setEventsEnabled(bool enabled)
     }
 }
 
+void FolderWatcher::clearPendingEvents()
+{
+    if (_processTimer->isActive())
+        _processTimer->stop();
+    _pendingPaths.clear();
+}
+
 int FolderWatcher::eventInterval() const
 {
     return _eventInterval;
@@ -102,16 +101,6 @@ void FolderWatcher::setEventInterval(int seconds)
     _eventInterval = seconds;
 }
 
-int FolderWatcher::pollInterval() const
-{
-    return _pollInterval;
-}
-
-void FolderWatcher::setPollInterval(int seconds)
-{
-    _pollInterval = seconds;
-}
-
 QStringList FolderWatcher::folders() const
 {
     return _inotify->directories();
@@ -213,13 +202,8 @@ void FolderWatcher::slotINotifyEvent(int mask, int cookie, const QString &path)
 void FolderWatcher::slotProcessTimerTimeout()
 {
     qDebug() << "* Scheduled processing of event queue";
-    slotProcessPaths();
-}
-
-void FolderWatcher::slotPollTimerTimeout()
-{
-    qDebug() << "* Polling remote for changes";
-    emit folderChanged(QStringList());
+    if (!_pendingPaths.empty())
+        slotProcessPaths();
 }
 
 void FolderWatcher::setProcessTimer()

src/mirall/folderwatcher.h

@@ -64,6 +64,11 @@ public:
      */
     void setEventsEnabled(bool enabled);
 
+    /**
+     * Clear all pending events
+     */
+    void clearPendingEvents();
+
     /**
      * The minimum amounts of seconds that will separate
      * folderChanged() intervals
@@ -76,19 +81,6 @@ public:
      */
     void setEventInterval(int seconds);
 
-    /**
-     * The minimum amounts of seconds to wait before
-     * doing a full sync to see if the remote changed
-     */
-    int pollInterval() const;
-
-    /**
-     * Sets minimum amounts of seconds that will separate
-     * poll intervals
-     */
-    void setPollInterval(int seconds);
-
-
 signals:
     /**
      * Emitted when one of the paths is changed
@@ -103,13 +95,11 @@ protected slots:
     void slotAddFolderRecursive(const QString &path);
     // called when the manually process timer triggers
     void slotProcessTimerTimeout();
-    void slotPollTimerTimeout();
     void slotProcessPaths();
 
 private:
     bool _eventsEnabled;
     int _eventInterval;
-    int _pollInterval;
 
     INotify *_inotify;
     QString _root;
@@ -117,8 +107,6 @@ private:
     QStringList _pendingPaths;
 
     QTimer *_processTimer;
-    // poll timer for remote syncs
-    QTimer *_pollTimer;
 
     QTime _lastEventTime;