From 0d325f827f5101f5d2bda38e308e2f95d7a594b6 Mon Sep 17 00:00:00 2001
From: Johan Smith Agudelo Rodriguez <audoban@openmailbox.org>
Date: Tue, 14 Feb 2017 23:54:41 -0500
Subject: [PATCH] fix #48, Support Alternatives from the Context Menu

---
 app/dockcorona.cpp | 60 ++++++++++++++++++++++++++++++++++++++++++++--
 app/dockcorona.h   | 11 ++++++---
 2 files changed, 66 insertions(+), 5 deletions(-)

diff --git a/app/dockcorona.cpp b/app/dockcorona.cpp
index 1e884f6eb..faeb7b634 100644
--- a/app/dockcorona.cpp
+++ b/app/dockcorona.cpp
@@ -22,10 +22,12 @@
 #include "dockview.h"
 #include "packageplugins/shell/dockpackage.h"
 #include "../liblattedock/windowsystem.h"
+#include "alternativeshelper.h"
 
 #include <QAction>
 #include <QScreen>
 #include <QDebug>
+#include <QQmlContext>
 
 #include <Plasma>
 #include <Plasma/Corona>
@@ -36,8 +38,7 @@
 #include <KPackage/Package>
 #include <KPackage/PackageLoader>
 #include <KAboutData>
-
-#include <kactivities/consumer.h>
+#include <KActivities/Consumer>
 
 namespace Latte {
 
@@ -333,6 +334,9 @@ void DockCorona::addDock(Plasma::Containment *containment)
     connect(containment, &QObject::destroyed, this, &DockCorona::dockContainmentDestroyed);
     connect(containment, &Plasma::Applet::destroyedChanged, this, &DockCorona::destroyedChanged);
     connect(containment, &Plasma::Applet::locationChanged, this, &DockCorona::dockLocationChanged);
+    connect(containment, &Plasma::Containment::appletAlternativesRequested
+            , this, &DockCorona::showAlternativesForApplet, Qt::QueuedConnection);
+
     dockView->show();
     m_dockViews[containment] = dockView;
     emit docksCountChanged();
@@ -365,6 +369,58 @@ void DockCorona::dockContainmentDestroyed(QObject *cont)
     emit docksCountChanged();
 }
 
+void DockCorona::showAlternativesForApplet(Plasma::Applet *applet)
+{
+    const QString alternativesQML = kPackage().filePath("appletalternativesui");
+    if (alternativesQML.isEmpty()) {
+        return;
+    }
+
+    KDeclarative::QmlObject *qmlObj = new KDeclarative::QmlObject(this);
+    qmlObj->setInitializationDelayed(true);
+    qmlObj->setSource(QUrl::fromLocalFile(alternativesQML));
+
+    AlternativesHelper *helper = new AlternativesHelper(applet, qmlObj);
+    qmlObj->rootContext()->setContextProperty(QStringLiteral("alternativesHelper"), helper);
+
+    m_alternativesObjects << qmlObj;
+    qmlObj->completeInitialization();
+    connect(qmlObj->rootObject(), SIGNAL(visibleChanged(bool)),
+            this, SLOT(alternativesVisibilityChanged(bool)));
+
+    connect(applet, &Plasma::Applet::destroyedChanged, this, [this, qmlObj] (bool destroyed) {
+        if (!destroyed) {
+            return;
+        }
+        QMutableListIterator<KDeclarative::QmlObject *> it(m_alternativesObjects);
+        while (it.hasNext()) {
+            KDeclarative::QmlObject *obj = it.next();
+            if (obj == qmlObj) {
+                it.remove();
+                obj->deleteLater();
+            }
+        }
+    });
+}
+
+void DockCorona::alternativesVisibilityChanged(bool visible)
+{
+    if (visible) {
+        return;
+    }
+
+    QObject *root = sender();
+
+    QMutableListIterator<KDeclarative::QmlObject *> it(m_alternativesObjects);
+    while (it.hasNext()) {
+        KDeclarative::QmlObject *obj = it.next();
+        if (obj->rootObject() == root) {
+            it.remove();
+            obj->deleteLater();
+        }
+    }
+}
+
 void DockCorona::loadDefaultLayout()
 {
     qDebug() << "loading default layout";
diff --git a/app/dockcorona.h b/app/dockcorona.h
index e0133cf77..9f0e800ec 100644
--- a/app/dockcorona.h
+++ b/app/dockcorona.h
@@ -18,14 +18,15 @@
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef NOWDOCKCORONA_H
-#define NOWDOCKCORONA_H
+#ifndef DOCKCORONA_H
+#define DOCKCORONA_H
 
 #include "dockview.h"
 
 #include <QObject>
 
 #include <KAboutApplicationDialog>
+#include <KDeclarative/QmlObject>
 
 namespace Plasma {
 class Corona;
@@ -74,6 +75,8 @@ signals:
 
 private slots:
     void destroyedChanged(bool destroyed);
+    void showAlternativesForApplet(Plasma::Applet *applet);
+    void alternativesVisibilityChanged(bool visible);
     void load();
 
 private:
@@ -86,8 +89,10 @@ private:
     bool m_activitiesStarting{true};
 
     QStringList m_debugFlags;
+
     QHash<const Plasma::Containment *, DockView *> m_dockViews;
     QHash<const Plasma::Containment *, DockView *> m_waitingDockViews;
+    QList<KDeclarative::QmlObject *> m_alternativesObjects;
 
     KActivities::Consumer *m_activityConsumer;
     QPointer<KAboutApplicationDialog> aboutDialog;
@@ -95,4 +100,4 @@ private:
 
 }
 
-#endif
+#endif // DOCKCORONA_H