1 files changed, 65 insertions, 0 deletions
diff --git a/plugins/ui-designer/src/com/intellij/ide/palette/PaletteGroup.java b/plugins/ui-designer/src/com/intellij/ide/palette/PaletteGroup.java
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index 000000000000..a19c1ab8e60d
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+++ b/plugins/ui-designer/src/com/intellij/ide/palette/PaletteGroup.java
@@ -0,0 +1,65 @@
+/*
+ * 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.openapi.actionSystem.ActionGroup;
+import com.intellij.openapi.project.Project;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * @author yole
+ */
+public interface PaletteGroup {
+  PaletteGroup[] EMPTY_ARRAY = new PaletteGroup[0];
+
+  PaletteItem[] getItems();
+
+  /**
+   * Returns the text of the group header for the palette group.
+   *
+   * @return the text of the group header for the palette group, or null if no header should be shown.
+   */
+  @Nullable String getName();
+
+  String getTabName();
+
+  /**
+   * 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);
+
+  /**
+   * Processes the drop of a palette item on the specified index in the palette group.
+   *
+   * @param project the project to which the drop target palette belongs.
+   * @param item    the dropped item.
+   * @param index   the index at which the dropped item should be inserted (from 0 to getItems().length).
+   */
+  void handleDrop(Project project, PaletteItem item, int index);
+}