/*
* Copyright 2003-2015 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 jetbrains.mps.openapi.editor.menus.transformation;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public interface ActionItem extends TransformationMenuItem {
/**
* Returns the text to be shown for this item in UI elements such as menu items, buttons or labels.
*
* @param pattern the text that the user has typed so far
*/
@Nullable
String getLabelText(String pattern);
/**
* Indicates whether the action may be executed with the given pattern. Always called in a read action.
*
* @param pattern the text that the user has typed so far
*/
default boolean canExecute(@NotNull String pattern) {
return true;
}
/**
* Performs the transformation. May change the editor selection and possibly other state. Will be called inside or outside a command depending
* on {@link #getCommandPolicy()}.
*
* @param pattern the text that the user has typed so far
*/
void execute(@NotNull String pattern);
/**
* Indicates whether the {@link #execute(String)} method should be called inside a command, or whether it will start one manually if needed.
*
* @return true if a command is required, false if it is required that there is no command.
*/
@NotNull
CommandPolicy getCommandPolicy();
}