com.drgarbage.core.preferences.HttpPathLinkField.java Source code

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Here is the source code for com.drgarbage.core.preferences.HttpPathLinkField.java

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/**
 * Copyright (c) 2008-2012, Dr. Garbage Community
 *
 * 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.drgarbage.core.preferences;

import org.eclipse.jface.preference.FieldEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Link;
import org.eclipse.swt.widgets.Listener;

import com.drgarbage.core.jface.LinkFactory;

public class HttpPathLinkField extends FieldEditor {

    private Link link;

    /**
    * Constructor.
    * @param name
    * @param labelText
    * @param parent
    */
    public HttpPathLinkField(String name, String labelText, Composite parent) {
        super(name, labelText, parent);
        createControl(parent);
    }

    public void addListener(int i, Listener listener) {
        link.addListener(i, listener);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.FieldEditor#adjustForNumColumns(int)
     */
    @Override
    protected void adjustForNumColumns(int numColumns) {
        if (link != null) {
            ((GridData) link.getLayoutData()).horizontalSpan = numColumns;
        }
    }

    protected Link createLink(Composite parent) {
        return LinkFactory.createHttpPathLink(parent, SWT.NONE);
    }

    /* (non-Javadoc)
    * @see org.eclipse.jface.preference.FieldEditor#doFillIntoGrid(org.eclipse.swt.widgets.Composite, int)
    */
    @Override
    protected void doFillIntoGrid(Composite parent, int numColumns) {
        Control control = getLinkControl(parent);
        GridData gd = new GridData();
        gd.horizontalSpan = numColumns;
        control.setLayoutData(gd);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.FieldEditor#doLoad()
     */
    @Override
    protected void doLoad() {
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.FieldEditor#doLoadDefault()
     */
    @Override
    protected void doLoadDefault() {
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.FieldEditor#doStore()
     */
    @Override
    protected void doStore() {
    }

    public Link getLinkControl(Composite parent) {
        if (link == null) {
            link = createLink(parent);
            link.setFont(parent.getFont());
            String text = getLabelText();
            if (text != null) {
                link.setText(text);
            }
            link.addDisposeListener(new DisposeListener() {
                public void widgetDisposed(DisposeEvent event) {
                    link = null;
                }
            });
        } else {
            checkParent(link, parent);
        }
        return link;
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.FieldEditor#getNumberOfControls()
     */
    @Override
    public int getNumberOfControls() {
        return 1;
    }

    public void removeListener(int i, Listener listener) {
        link.removeListener(i, listener);
    }

    public void setLabelText(String text) {
        super.setLabelText(text);
        if (link != null) {
            link.setText(text);
        }
    }

}