Port back to KFilePlacesView

This removes the custom-view engine version of the places panel
and replaces it with the upstream `KFilePlacesView` from KIO.

1 files changed, 50 insertions, 1 deletions

diff --git a/src/dolphinplacesmodelsingleton.cpp b/src/dolphinplacesmodelsingleton.cpp
index 30ec1b9b6..754070c92 100644
--- a/src/dolphinplacesmodelsingleton.cpp
+++ b/src/dolphinplacesmodelsingleton.cpp
@@ -5,12 +5,61 @@
  */
 
 #include "dolphinplacesmodelsingleton.h"
+#include "trash/dolphintrash.h"
 
 #include <KAboutData>
 #include <KFilePlacesModel>
 
+#include <QIcon>
+
+DolphinPlacesModel::DolphinPlacesModel(const QString &alternativeApplicationName, QObject *parent)
+    : KFilePlacesModel(alternativeApplicationName, parent)
+{
+    connect(&Trash::instance(), &Trash::emptinessChanged, this, &DolphinPlacesModel::slotTrashEmptinessChanged);
+}
+
+DolphinPlacesModel::~DolphinPlacesModel() = default;
+
+QVariant DolphinPlacesModel::data(const QModelIndex &index, int role) const
+{
+    if (role == Qt::DecorationRole) {
+        if (isTrash(index)) {
+            if (m_isEmpty) {
+                return QIcon::fromTheme(QStringLiteral("user-trash"));
+            } else {
+                return QIcon::fromTheme(QStringLiteral("user-trash-full"));
+            }
+        }
+    }
+
+    return KFilePlacesModel::data(index, role);
+}
+
+void DolphinPlacesModel::slotTrashEmptinessChanged(bool isEmpty)
+{
+    if (m_isEmpty == isEmpty) {
+        return;
+    }
+
+    // NOTE Trash::isEmpty() reads the config file whereas emptinessChanged is
+    // hooked up to whether a dirlister in trash:/ has any files and they disagree...
+    m_isEmpty = isEmpty;
+
+    for (int i = 0; i < rowCount(); ++i) {
+        const QModelIndex index = this->index(i, 0);
+        if (isTrash(index)) {
+            Q_EMIT dataChanged(index, index, {Qt::DecorationRole});
+        }
+    }
+}
+
+bool DolphinPlacesModel::isTrash(const QModelIndex &index) const
+{
+    return url(index) == QUrl(QStringLiteral("trash:/"));
+}
+
 DolphinPlacesModelSingleton::DolphinPlacesModelSingleton()
-    : m_placesModel(new KFilePlacesModel(KAboutData::applicationData().componentName() + applicationNameSuffix()))
+    : m_placesModel(new DolphinPlacesModel(KAboutData::applicationData().componentName() + applicationNameSuffix()))
 {
 
 }