Merge remote-tracking branch 'origin/master'

1 files changed, 107 insertions, 0 deletions

diff --git a/src-qt5/src-cpp/plugins-base.h b/src-qt5/src-cpp/plugins-base.h
new file mode 100644
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+++ b/src-qt5/src-cpp/plugins-base.h
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+//===========================================
+//  Lumina-desktop source code
+//  Copyright (c) 2017, Ken Moore
+//  Available under the 3-clause BSD license
+//  See the LICENSE file for full details
+//===========================================
+// This is a simple class for managing all the various desktop
+//  screensaver plugins that could be available
+//===========================================
+//  NOTE:
+//  This class has a heirarchy-based lookup system
+//  USER plugins > SYSTEM plugins
+//  XDG_DATA_HOME/lumina-desktop/screensavers >  XDG_DATA_DIRS/lumina-desktop/screensavers
+//===========================================
+#ifndef _LUMINA_DESKTOP_BASE_PLUGINS_CLASS_H
+#define _LUMINA_DESKTOP_BASE_PLUGINS_CLASS_H
+
+#include <QJsonObject>
+#include <QString>
+#include <QUrl>
+#include <QObject>
+#include <QJsonDocument>
+#include <QJsonArray>
+#include <QFile>
+#include <QDir>
+#include <QDebug>
+
+class BasePlugin{
+protected:
+	QString currentfile;
+
+public:
+	BasePlugin();
+	virtual ~BasePlugin();
+
+	virtual void loadFile(QString path);
+	bool isLoaded() { return !data.isEmpty(); };
+  bool containsDefault(QString obj) { return data.value(obj).toObject().contains("default"); }
+
+  /**
+   * Check if the plugin is valid as long as the JSON is not empty,
+   * it contains at least a "name", "qml", and "description" object,
+   * and the "name" and "description" objects contain a "default" key. 
+  **/
+	virtual bool isValid() = 0;
+
+	virtual QString translatedObject(QString obj);
+	virtual QUrl scriptURL();
+
+	QJsonObject data; //Hazardous to manually modify
+  QString relDir;
+};
+
+class PluginSystem{
+public:
+  template <class T>
+  static T findPlugin(QString, QString);
+
+  template <class T>
+  static QList<T> findAllPlugins(QString, bool validonly=true);
+};
+
+// ===================
+// 	Base PLUGIN SYSTEM
+// ===================
+template <class T> 
+T PluginSystem::findPlugin(QString name, QString REL_DIR){
+  //qDebug() << "FindPlugin:" << name;
+  T BaseP;
+  if(name.startsWith("/") && QFile::exists(name)){ BaseP.loadFile(name); return BaseP;} //absolute path give - just load that one
+  //Cleanup the input name and ensure it has the right suffix
+  name = name.section("/",-1);
+  if(!name.endsWith(".json")){ name.append(".json"); }
+  //Get the list of directories to search
+  QStringList dirs;
+  dirs << QString(getenv("XDG_DATA_HOME")) << QString(getenv("XDG_DATA_DIRS")).split(":");
+  //Look for that file within these directories and return the first one found
+  for(int i=0; i<dirs.length(); i++){
+    if(!QFile::exists(dirs[i]+REL_DIR+"/"+name)){ continue; }
+    BaseP.loadFile(dirs[i]+REL_DIR+"/"+name);
+    if(BaseP.isValid()){ break; } //got a good one - stop here
+  }
+  return BaseP;
+}
+
+template <class T>
+QList<T> PluginSystem::findAllPlugins(QString REL_DIR, bool validonly) {
+  QList<T> LIST;
+  //Get the list of directories to search
+  QStringList dirs;
+  dirs << QString(getenv("XDG_DATA_HOME")) << QString(getenv("XDG_DATA_DIRS")).split(":");
+ //Look for that file within these directories and return the first one found
+  for(int i=0; i<dirs.length(); i++){
+    if(!QFile::exists(dirs[i]+REL_DIR)){ continue; }
+    QDir dir(dirs[i]+REL_DIR);
+    QStringList files = dir.entryList(QStringList() << "*.json", QDir::Files, QDir::Name);
+     //qDebug() << "Found Files:" << files;
+    for(int j=0; j<files.length(); j++){
+      T tmp;
+      tmp.loadFile(dir.absoluteFilePath(files[j]));
+      //qDebug() << "Loaded File:" << files[j] << tmp.isValid();
+      if(!validonly || tmp.isValid()){ LIST << tmp; }
+    }
+  }
+  return LIST;
+}
+#endif