com.gitblit.wicket.panels.MarkdownTextArea.java Source code

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Here is the source code for com.gitblit.wicket.panels.MarkdownTextArea.java

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/*
 * Copyright 2013 gitblit.com.
 *
 * 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.gitblit.wicket.panels;

import org.apache.wicket.ajax.AbstractAjaxTimerBehavior;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.TextArea;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.util.time.Duration;

import com.gitblit.utils.MarkdownUtils;
import com.gitblit.wicket.GitBlitWebApp;

public class MarkdownTextArea extends TextArea {

    private static final long serialVersionUID = 1L;

    protected String repositoryName;

    protected String text = "";

    public MarkdownTextArea(String id, final IModel<String> previewModel, final Label previewLabel) {
        super(id);
        setModel(new PropertyModel(this, "text"));
        add(new AjaxFormComponentUpdatingBehavior("blur") {
            private static final long serialVersionUID = 1L;

            @Override
            protected void onUpdate(AjaxRequestTarget target) {
                renderPreview(previewModel);
                if (target != null) {
                    target.add(previewLabel);
                }
            }
        });
        add(new AjaxFormComponentUpdatingBehavior("change") {
            private static final long serialVersionUID = 1L;

            @Override
            protected void onUpdate(AjaxRequestTarget target) {
                renderPreview(previewModel);
                if (target != null) {
                    target.add(previewLabel);
                }
            }
        });

        add(new KeepAliveBehavior());
        setOutputMarkupId(true);
    }

    protected void renderPreview(IModel<String> previewModel) {
        if (text == null) {
            return;
        }
        String html = MarkdownUtils.transformGFM(GitBlitWebApp.get().settings(), text, repositoryName);
        String safeHtml = GitBlitWebApp.get().xssFilter().relaxed(html);
        previewModel.setObject(safeHtml);
    }

    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }

    public void setRepository(String repositoryName) {
        this.repositoryName = repositoryName;
    }

    //   @Override
    //   protected void onBeforeRender() {
    //      super.onBeforeRender();
    //      add(new RichTextSetActiveTextFieldAttributeModifier(this.getMarkupId()));
    //   }
    //
    //   private class RichTextSetActiveTextFieldAttributeModifier extends AttributeModifier {
    //
    //      private static final long serialVersionUID = 1L;
    //
    //      public RichTextSetActiveTextFieldAttributeModifier(String markupId) {
    //         super("Click", true, new Model("richTextSetActiveTextField('" + markupId + "');"));
    //      }
    //   }

    private class KeepAliveBehavior extends AbstractAjaxTimerBehavior {

        private static final long serialVersionUID = 1L;

        public KeepAliveBehavior() {
            super(Duration.minutes(5));
        }

        @Override
        protected void onTimer(AjaxRequestTarget target) {
            // prevent wicket changing focus
            target.focusComponent(null);
        }
    }
}