Initial commit.

src/core/taskmanager.cpp

@@ -0,0 +1,138 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ *
+ * Strawberry 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry 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 Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+#include "config.h"
+
+#include "taskmanager.h"
+
+TaskManager::TaskManager(QObject *parent) : QObject(parent), next_task_id_(1) {}
+
+int TaskManager::StartTask(const QString &name) {
+
+  Task t;
+  t.name = name;
+  t.progress = 0;
+  t.progress_max = 0;
+  t.blocks_collection_scans = false;
+
+  {
+    QMutexLocker l(&mutex_);
+    t.id = next_task_id_++;
+    tasks_[t.id] = t;
+  }
+
+  emit TasksChanged();
+  return t.id;
+
+}
+
+QList<TaskManager::Task> TaskManager::GetTasks() {
+
+  QList<TaskManager::Task> ret;
+
+  {
+    QMutexLocker l(&mutex_);
+    ret = tasks_.values();
+  }
+
+  return ret;
+
+}
+
+void TaskManager::SetTaskBlocksCollectionScans(int id) {
+
+  {
+    QMutexLocker l(&mutex_);
+    if (!tasks_.contains(id)) return;
+
+    Task &t = tasks_[id];
+    t.blocks_collection_scans = true;
+  }
+
+  emit TasksChanged();
+  emit PauseCollectionWatchers();
+
+}
+
+void TaskManager::SetTaskProgress(int id, int progress, int max) {
+
+  {
+    QMutexLocker l(&mutex_);
+    if (!tasks_.contains(id)) return;
+
+    Task &t = tasks_[id];
+    t.progress = progress;
+    if (max) t.progress_max = max;
+  }
+
+  emit TasksChanged();
+}
+
+void TaskManager::IncreaseTaskProgress(int id, int progress, int max) {
+
+  {
+    QMutexLocker l(&mutex_);
+    if (!tasks_.contains(id)) return;
+
+    Task &t = tasks_[id];
+    t.progress += progress;
+    if (max) t.progress_max = max;
+  }
+
+  emit TasksChanged();
+
+}
+
+void TaskManager::SetTaskFinished(int id) {
+
+  bool resume_collection_watchers = false;
+
+  {
+    QMutexLocker l(&mutex_);
+    if (!tasks_.contains(id)) return;
+
+    if (tasks_[id].blocks_collection_scans) {
+      resume_collection_watchers = true;
+      for (const Task &task : tasks_.values()) {
+        if (task.id != id && task.blocks_collection_scans) {
+          resume_collection_watchers = false;
+          break;
+        }
+      }
+    }
+
+    tasks_.remove(id);
+  }
+
+  emit TasksChanged();
+  if (resume_collection_watchers) emit ResumeCollectionWatchers();
+
+}
+
+int TaskManager::GetTaskProgress(int id) {
+
+  {
+    QMutexLocker l(&mutex_);
+    if (!tasks_.contains(id)) return 0;
+    return tasks_[id].progress;
+  }
+
+}
+