Package org.apache.pivot.tutorials.menus

Source Code of org.apache.pivot.tutorials.menus.MenuBars

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you 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 org.apache.pivot.tutorials.menus;

import java.io.IOException;

import org.apache.pivot.collections.Map;
import org.apache.pivot.serialization.SerializationException;
import org.apache.pivot.wtk.Action;
import org.apache.pivot.wtk.Application;
import org.apache.pivot.wtk.Border;
import org.apache.pivot.wtk.Component;
import org.apache.pivot.wtk.DesktopApplicationContext;
import org.apache.pivot.wtk.Display;
import org.apache.pivot.wtk.FileBrowserSheet;
import org.apache.pivot.wtk.MenuBar;
import org.apache.pivot.wtk.MenuHandler;
import org.apache.pivot.wtk.PushButton;
import org.apache.pivot.wtk.TabPane;
import org.apache.pivot.wtk.TextInput;
import org.apache.pivot.wtk.TextInputSelectionListener;
import org.apache.pivot.wtk.TextInputTextListener;
import org.apache.pivot.wtk.Window;
import org.apache.pivot.wtkx.WTKXSerializer;

public class MenuBars implements Application {
    private Window window = null;
    private TabPane tabPane = null;
    private FileBrowserSheet fileBrowserSheet = null;

    private MenuHandler menuHandler = new MenuHandler.Adapter() {
        TextInputTextListener textInputTextListener = new TextInputTextListener() {
            @Override
            public void textChanged(TextInput textInput) {
                updateActionState(textInput);
            }
        };

        TextInputSelectionListener textInputSelectionListener = new TextInputSelectionListener() {
            @Override
            public void selectionChanged(TextInput textInput, int previousSelectionStart,
                int previousSelectionLength) {
                updateActionState(textInput);
            }
        };

        @Override
        public void configureMenuBar(Component component, MenuBar menuBar) {
            if (component instanceof TextInput) {
                TextInput textInput = (TextInput)component;

                updateActionState(textInput);
                Action.getNamedActions().get("paste").setEnabled(true);

                textInput.getTextInputTextListeners().add(textInputTextListener);
                textInput.getTextInputSelectionListeners().add(textInputSelectionListener);
            } else {
                Action.getNamedActions().get("cut").setEnabled(false);
                Action.getNamedActions().get("copy").setEnabled(false);
                Action.getNamedActions().get("paste").setEnabled(false);
            }
        }

        @Override
        public void cleanupMenuBar(Component component, MenuBar menuBar) {
            if (component instanceof TextInput) {
                TextInput textInput = (TextInput)component;
                textInput.getTextInputTextListeners().remove(textInputTextListener);
                textInput.getTextInputSelectionListeners().remove(textInputSelectionListener);
            }
        }

        private void updateActionState(TextInput textInput) {
            Action.getNamedActions().get("cut").setEnabled(textInput.getSelectionLength() > 0);
            Action.getNamedActions().get("copy").setEnabled(textInput.getSelectionLength() > 0);
        }
    };

    public MenuBars() {
        Action.getNamedActions().put("fileNew", new Action() {
            @Override
            public void perform(Component source) {
                WTKXSerializer wtkxSerializer = new WTKXSerializer();
                Component tab;
                try {
                    tab = new Border((Component)wtkxSerializer.readObject(this, "document.wtkx"));

                    TextInput textInput1 = (TextInput)wtkxSerializer.get("textInput1");
                    textInput1.setMenuHandler(menuHandler);

                    TextInput textInput2 = (TextInput)wtkxSerializer.get("textInput2");
                    textInput2.setMenuHandler(menuHandler);

                    PushButton pushButton = (PushButton)wtkxSerializer.get("pushButton");
                    pushButton.setMenuHandler(menuHandler);
                } catch (IOException exception) {
                    throw new RuntimeException(exception);
                } catch (SerializationException exception) {
                    throw new RuntimeException(exception);
                }

                tabPane.getTabs().add(tab);
                TabPane.setLabel(tab, "Document " + tabPane.getTabs().getLength());
                tabPane.setSelectedIndex(tabPane.getTabs().getLength() - 1);
            }
        });

        Action.getNamedActions().put("fileOpen", new Action() {
            @Override
            public void perform(Component source) {
                fileBrowserSheet.open(window);
            }
        });

        Action.getNamedActions().put("cut", new Action(false) {
            @Override
            public void perform(Component source) {
                TextInput textInput = (TextInput)window.getFocusDescendant();
                textInput.cut();
            }
        });

        Action.getNamedActions().put("copy", new Action(false) {
            @Override
            public void perform(Component source) {
                TextInput textInput = (TextInput)window.getFocusDescendant();
                textInput.copy();
            }
        });

        Action.getNamedActions().put("paste", new Action(false) {
            @Override
            public void perform(Component source) {
                TextInput textInput = (TextInput)window.getFocusDescendant();
                textInput.paste();
            }
        });
    }

    @Override
    public void startup(Display display, Map<String, String> properties)
        throws Exception {
        WTKXSerializer wtkxSerializer = new WTKXSerializer();
        window = (Window)wtkxSerializer.readObject(this, "menu_bars.wtkx");

        tabPane = (TabPane)wtkxSerializer.get("tabPane");

        fileBrowserSheet = new FileBrowserSheet();

        window.open(display);
    }

    @Override
    public boolean shutdown(boolean optional) {
        if (window != null) {
            window.close();
        }

        return false;
    }

    @Override
    public void suspend() {
    }

    @Override
    public void resume() {
    }

    public static void main(String[] args) {
        DesktopApplicationContext.main(MenuBars.class, args);
    }
}
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