jetbrains.jetpad.event.dom.ClipboardSupport.java Source code

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Here is the source code for jetbrains.jetpad.event.dom.ClipboardSupport.java

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/*
 * Copyright 2012-2016 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.jetpad.event.dom;

import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.Style;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextArea;
import jetbrains.jetpad.base.Handler;
import jetbrains.jetpad.event.ClipboardContent;
import jetbrains.jetpad.event.ContentKinds;

import static com.google.gwt.query.client.GQuery.$;

public class ClipboardSupport {
    private Element myTarget;

    public ClipboardSupport(Element target) {
        myTarget = target;
    }

    public void pasteContent(final Handler<String> handler) {
        final TextArea pasteArea = createClipboardTextArea();
        new Timer() {
            @Override
            public void run() {
                RootPanel.get().remove(pasteArea);
                $(myTarget).focus();
                String text = pasteArea.getText();
                handler.handle(text);
            }
        }.schedule(20);
    }

    public void copyContent(ClipboardContent content) {
        final TextArea copyArea = createClipboardTextArea();
        if (content.isSupported(ContentKinds.TEXT)) {
            copyArea.setText(content.get(ContentKinds.TEXT));
        } else {
            copyArea.setText(content.toString());
        }
        copyArea.selectAll();
        new Timer() {
            @Override
            public void run() {
                RootPanel.get().remove(copyArea);
                $(myTarget).focus();
            }
        }.schedule(20);
    }

    private TextArea createClipboardTextArea() {
        final TextArea pasteArea = new TextArea();
        pasteArea.setPixelSize(0, 0);
        Style style = pasteArea.getElement().getStyle();
        style.setPosition(Style.Position.FIXED);
        RootPanel.get().add(pasteArea);
        pasteArea.setFocus(true);
        return pasteArea;
    }
}