org.obiba.opal.web.gwt.app.client.ui.MarkdownEditor.java Source code

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Here is the source code for org.obiba.opal.web.gwt.app.client.ui.MarkdownEditor.java

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/*
 * Copyright (c) 2014 OBiBa. All rights reserved.
 *
 * This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.obiba.opal.web.gwt.app.client.ui;

import org.obiba.opal.web.gwt.ace.client.AceEditor;
import org.obiba.opal.web.gwt.app.client.i18n.Translations;
import org.obiba.opal.web.gwt.markdown.client.Markdown;

import com.google.gwt.core.client.GWT;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.user.client.ui.HasText;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.Widget;

public class MarkdownEditor extends Composite implements HasText {

    interface MarkdownEditorUiBinder extends UiBinder<Widget, MarkdownEditor> {
    }

    private static final MarkdownEditorUiBinder uiBinder = GWT.create(MarkdownEditorUiBinder.class);

    private static final Translations translations = GWT.create(Translations.class);

    @UiField
    AceEditor editor;

    @UiField
    Panel preview;

    @UiField
    ToggleAnchor toggle;

    public MarkdownEditor() {
        initWidget(uiBinder.createAndBindUi(this));

        toggle.setTexts(translations.previewLabel(), translations.editLabel());
        toggle.setDelegate(new ToggleAnchor.Delegate() {
            @Override
            public void executeOn() {
                togglePreview(true);
            }

            @Override
            public void executeOff() {
                togglePreview(false);
            }

            public void togglePreview(boolean visible) {
                preview.setVisible(visible);
                editor.setVisible(!visible);
                preview.clear();
                if (visible) {
                    preview.add(new HTMLPanel(Markdown.parse(getText())));
                }
            }
        });
    }

    @Override
    public String getText() {
        return editor.getText();
    }

    @Override
    public void setText(String text) {
        editor.setText(text);
    }

    public void showPreview(boolean visible) {
        toggle.setOn(true, true);
    }
}