QmlDesigner: Add "Apply as light probe" option to material browser

Textures in material browser can now be applied as light probes to
the active SceneEnvironment node.

Also changed the logic for resolving the active SceneEnvironment node
to prefer a currently single-selected SceneEnvironment node over
the SceneEnvironment node associated with currently active 3D scene.

Fixes: QDS-8472
Change-Id: I9a3a7b9c2fad3c8120e85ade507a7ea66de19f1d
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>

src/plugins/qmldesigner/components/materialbrowser/materialbrowsertexturesmodel.cpp

@@ -214,6 +214,20 @@ void MaterialBrowserTexturesModel::setHasSingleModelSelection(bool b)
     emit hasSingleModelSelectionChanged();
 }
 
+bool MaterialBrowserTexturesModel::hasSceneEnv() const
+{
+    return m_hasSceneEnv;
+}
+
+void MaterialBrowserTexturesModel::setHasSceneEnv(bool b)
+{
+    if (b == m_hasSceneEnv)
+        return;
+
+    m_hasSceneEnv = b;
+    emit hasSceneEnvChanged();
+}
+
 void MaterialBrowserTexturesModel::resetModel()
 {
     beginResetModel();
@@ -273,4 +287,18 @@ void MaterialBrowserTexturesModel::openTextureEditor()
     QmlDesignerPlugin::instance()->mainWidget()->showDockWidget("TextureEditor", true);
 }
 
+void MaterialBrowserTexturesModel::updateSceneEnvState()
+{
+    emit updateSceneEnvStateRequested();
+}
+
+void MaterialBrowserTexturesModel::applyAsLightProbe(qint64 internalId)
+{
+    int idx = m_textureIndexHash.value(internalId);
+    if (idx != -1) {
+        ModelNode tex = m_textureList.at(idx);
+        emit applyAsLightProbeRequested(tex);
+    }
+}
+
 } // namespace QmlDesigner