QmlDesigner: Allow folders drag & drop in Asset Library

Fixes: QDS-13465
Change-Id: Ib9f30f18cf927417037dfa4c79b53534d2ad8e86
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>

share/qtcreator/qmldesigner/assetsLibraryQmlSources/AssetDelegate.qml

@@ -101,21 +101,9 @@ TreeViewDelegate {
                     : "transparent"
         }
         border.width: StudioTheme.Values.border
-        border.color: {
-            if (root.__isDirectory && (root.isHighlighted || root.hasChildWithDropHover))
-                return StudioTheme.Values.themeInteraction
-
-            if (!root.__isDirectory && root.assetsView.selectedAssets[root.__itemPath])
-                return StudioTheme.Values.themeInteraction
-
-            if (mouseArea.containsMouse)
-                return StudioTheme.Values.themeSectionHeadBackground
-
-            return root.__isDirectory
-                    ? StudioTheme.Values.themeSectionHeadBackground
+        border.color: root.assetsView.selectedAssets[root.__itemPath] ? StudioTheme.Values.themeInteraction
                                                                       : "transparent"
     }
-    }
 
     contentItem: Text {
         id: assetLabel
@@ -158,14 +146,19 @@ TreeViewDelegate {
             mouseArea.allowTooltip = false
             AssetsLibraryBackend.tooltipBackend.hideTooltip()
 
-            if (root.__isDirectory)
-                return
-
             var ctrlDown = mouse.modifiers & Qt.ControlModifier
+
             if (mouse.button === Qt.LeftButton) {
+                if (root.__isDirectory) {
+                    // ensure only one directory can be selected
+                    root.assetsView.clearSelectedAssets()
+                    root.currFileSelected = true
+                } else {
                     if (!root.assetsView.isAssetSelected(root.__itemPath) && !ctrlDown)
                         root.assetsView.clearSelectedAssets()
                     root.currFileSelected = ctrlDown ? !root.assetsView.isAssetSelected(root.__itemPath) : true
+                }
+
                 root.assetsView.setAssetSelected(root.__itemPath, root.currFileSelected)
 
                 if (root.currFileSelected) {
@@ -356,8 +349,8 @@ TreeViewDelegate {
 
         onEntered: (drag) => {
             root.assetsRoot.updateDropExtFiles(drag)
-
-            drag.accepted |= (drag.formats[0] === "application/vnd.qtdesignstudio.assets")
+            drag.accepted |= drag.formats[0] === "application/vnd.qtdesignstudio.assets"
+                          && !root.assetsModel.isSameOrDescendantPath(drag.urls[0], root.__itemPath)
 
             if (root.__isDirectory)
                 root.isHighlighted = drag.accepted

share/qtcreator/qmldesigner/assetsLibraryQmlSources/AssetsView.qml

@@ -83,9 +83,7 @@ TreeView {
         interval: 200
         repeat: false
 
-        onTriggered: {
-            root.updateRows()
-        }
+        onTriggered: root.updateRows()
     }
 
     Connections {

src/plugins/qmldesigner/components/assetslibrary/assetslibrary.qrc

@@ -22,5 +22,7 @@
         <file>images/asset_ktx.png</file>
         <file>images/asset_ktx@2x.png</file>
         <file>images/asset_ktx_128.png</file>
+        <file>images/asset_folder.png</file>
+        <file>images/asset_folder@2x.png</file>
     </qresource>
 </RCC>

src/plugins/qmldesigner/components/assetslibrary/assetslibraryiconprovider.cpp

@@ -110,6 +110,8 @@ QPair<QPixmap, qint64> AssetsLibraryIconProvider::fetchPixmap(const QString &id,
             type = "video";
         else if (asset.isEffect())
             type = QmlDesigner::ModelNodeOperations::getEffectIcon(id);
+        else if (asset.isFolder())
+            type = "folder";
 
         QString pathTemplate = QString(":/AssetsLibrary/images/asset_%1%2.png").arg(type);
         QString path = pathTemplate.arg('_' + QString::number(requestedSize.width()));

src/plugins/qmldesigner/components/assetslibrary/assetslibrarymodel.cpp

@@ -197,6 +197,14 @@ bool AssetsLibraryModel::allFilePathsAreComposedEffects(const QStringList &fileP
     });
 }
 
+bool AssetsLibraryModel::isSameOrDescendantPath(const QUrl &source, const QString &target) const
+{
+    Utils::FilePath srcPath = Utils::FilePath::fromUrl(source);
+    Utils::FilePath targetPath = Utils::FilePath::fromString(target);
+
+    return targetPath.isChildOf(srcPath);
+}
+
 bool AssetsLibraryModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
 {
     QString path = m_sourceFsModel->filePath(sourceParent);

src/plugins/qmldesigner/components/assetslibrary/assetslibrarymodel.h

@@ -50,6 +50,7 @@ public:
     Q_INVOKABLE bool deleteFolderRecursively(const QModelIndex &folderIndex);
     Q_INVOKABLE bool allFilePathsAreTextures(const QStringList &filePaths) const;
     Q_INVOKABLE bool allFilePathsAreComposedEffects(const QStringList &filePaths) const;
+    Q_INVOKABLE bool isSameOrDescendantPath(const QUrl &source, const QString &target) const;
 
     int columnCount(const QModelIndex &parent = QModelIndex()) const override
     {

src/plugins/qmldesigner/libs/qmldesignerutils/asset.cpp

@@ -207,10 +207,18 @@ bool Asset::isValidTextureSource()
     return isImage() || isTexture3D();
 }
 
+bool Asset::isFolder() const
+{
+    return m_type == Asset::Type::Folder;
+}
+
 void Asset::resolveType()
 {
-    if (m_suffix.isEmpty())
+    if (m_suffix.isEmpty()) {
+        m_type = Asset::Type::Folder;
+
         return;
+    }
 
     if (supportedImageSuffixes().contains(m_suffix))
         m_type = Asset::Type::Image;

src/plugins/qmldesigner/libs/qmldesignerutils/asset.h

@@ -24,7 +24,8 @@ public:
                 Audio,
                 Video,
                 Texture3D,
-                Effect };
+                Effect,
+                Folder };
 
     Asset(const QString &filePath);
 
@@ -60,6 +61,7 @@ public:
     bool isEffect() const;
     bool isSupported() const;
     bool isValidTextureSource();
+    bool isFolder() const;
 
 private:
     void resolveType();