QmlDesigner: Add flow mode to ItemLibrary

If in flow mode we only show FlowItems.

Change-Id: I7d41155eac8bc180c7ac1d0092b35d7fc3f9be91
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/qmldesigner/components/itemlibrary/itemlibrarymodel.cpp

@@ -64,6 +64,13 @@ void ItemLibraryModel::setExpanded(bool expanded, const QString &section)
         collapsedStateHash.insert(section, expanded);
 }
 
+void ItemLibraryModel::setFlowMode(bool b)
+{
+    m_flowMode = b;
+    bool changed;
+    updateVisibility(&changed);
+}
+
 ItemLibraryModel::ItemLibraryModel(QObject *parent)
     : QAbstractListModel(parent)
 {
@@ -187,6 +194,12 @@ void ItemLibraryModel::update(ItemLibraryInfo *itemLibraryInfo, Model *model)
 
         bool forceVisiblity = valid && NodeHints::fromItemLibraryEntry(entry).visibleInLibrary();
 
+        if (m_flowMode) {
+            forceVisiblity = false;
+            isItem = metaInfo.isSubclassOf("FlowView.FlowItem");
+        }
+
+
         if (valid
                 && (isItem || forceVisiblity) //We can change if the navigator does support pure QObjects
                 && (entry.requiredImport().isEmpty()
@@ -262,6 +275,10 @@ void ItemLibraryModel::updateVisibility(bool *changed)
         bool sectionChanged = false;
         bool sectionVisibility = itemLibrarySection->updateSectionVisibility(sectionSearchText,
                                                                              &sectionChanged);
+
+        if (m_flowMode  && itemLibrarySection->sectionName() != "My QML Components")
+            sectionVisibility= false;
+
         *changed |= sectionChanged;
         *changed |= itemLibrarySection->setVisible(sectionVisibility);
     }

src/plugins/qmldesigner/components/itemlibrary/itemlibrarymodel.h

@@ -73,6 +73,8 @@ public:
 
     void setExpanded(bool, const QString &section);
 
+    void setFlowMode(bool);
+
 signals:
     void qmlModelChanged();
     void searchTextChanged();
@@ -88,6 +90,7 @@ private: // variables
     QHash<int, QByteArray> m_roleNames;
 
     QString m_searchText;
+    bool m_flowMode = false;
 };
 
 } // namespace QmlDesigner

src/plugins/qmldesigner/components/itemlibrary/itemlibraryview.cpp

@@ -27,6 +27,7 @@
 #include "itemlibrarywidget.h"
 #include <import.h>
 #include <importmanagerview.h>
+#include <qmlitemnode.h>
 #include <rewriterview.h>
 
 namespace QmlDesigner {
@@ -68,6 +69,7 @@ void ItemLibraryView::modelAttached(Model *model)
     updateImports();
     model->attachView(m_importManagerView);
     m_hasErrors = !rewriterView()->errors().isEmpty();
+    m_widget->setFlowMode(QmlItemNode(rootModelNode()).isFlowView());
 }
 
 void ItemLibraryView::modelAboutToBeDetached(Model *model)

src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp

@@ -416,6 +416,11 @@ void ItemLibraryWidget::startDragAndDrop(QQuickItem *mouseArea, QVariant itemLib
     });
 }
 
+void ItemLibraryWidget::setFlowMode(bool b)
+{
+    m_itemLibraryModel->setFlowMode(b);
+}
+
 void ItemLibraryWidget::removeImport(const QString &name)
 {
     QTC_ASSERT(m_model, return);

src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h

@@ -86,6 +86,8 @@ public:
 
     Q_INVOKABLE void startDragAndDrop(QQuickItem *mouseArea, QVariant itemLibId);
 
+    void setFlowMode(bool b);
+
 signals:
     void itemActivated(const QString& itemName);