1 files changed, 56 insertions, 0 deletions
diff --git a/plugins/ui-designer/src/com/intellij/ide/palette/PaletteItem.java b/plugins/ui-designer/src/com/intellij/ide/palette/PaletteItem.java
new file mode 100644
index 000000000000..372839d67266
--- /dev/null
+++ b/plugins/ui-designer/src/com/intellij/ide/palette/PaletteItem.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2000-2009 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.intellij.ide.palette;
+
+import com.intellij.ide.dnd.DnDDragStartBean;
+import com.intellij.openapi.actionSystem.ActionGroup;
+import com.intellij.openapi.project.Project;
+import com.intellij.ui.ColoredListCellRenderer;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * @author yole
+ */
+public interface PaletteItem {
+  void customizeCellRenderer(ColoredListCellRenderer cellRenderer,
+                             boolean selected,
+                             boolean hasFocus);
+
+  /**
+   * Processes dragging the item.
+   *
+   * @return the drag start bean for the drag process, or null if the item cannot be dragged.
+   */
+  @Nullable DnDDragStartBean startDragging();
+
+  /**
+   * Returns the action group from which the context menu is built when the palette
+   * item is right-clicked.
+   *
+   * @return the action group, or null if no context menu should be shown.
+   */
+  @Nullable ActionGroup getPopupActionGroup();
+
+  /**
+   * Returns the data for the specified data constant.
+   *
+   * @param project the project in the context of which data is requested.
+   * @param dataId  the data constant id (see {@link com.intellij.openapi.actionSystem.PlatformDataKeys}).
+   * @return the data item, or null if no data is available for this constant.
+   */
+  @Nullable Object getData(Project project, String dataId);
+}