edu.tsinghua.lumaqq.ui.dialogs.SelectGroupDialog.java Source code

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Here is the source code for edu.tsinghua.lumaqq.ui.dialogs.SelectGroupDialog.java

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/*
* LumaQQ - Java QQ Client
*
* Copyright (C) 2004 luma <stubma@163.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package edu.tsinghua.lumaqq.ui.dialogs;

import static edu.tsinghua.lumaqq.resource.Messages.button_ok;
import static edu.tsinghua.lumaqq.resource.Messages.message_box_common_warning_title;
import static edu.tsinghua.lumaqq.resource.Messages.message_box_please_select_group;
import static edu.tsinghua.lumaqq.resource.Messages.select_group_label_hint;
import static edu.tsinghua.lumaqq.resource.Messages.select_group_title;

import java.util.List;

import edu.tsinghua.lumaqq.models.Group;
import edu.tsinghua.lumaqq.widgets.qstyle.Slat;

import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Dialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;

/**
 * <pre>
 * ???
 * </pre>
 * 
 * @author luma
 */
public class SelectGroupDialog extends Dialog {
    // ??
    private Table table;
    // model
    private List<Group> model;
    // selection
    private int selection;

    /**
     * @param parent
     */
    public SelectGroupDialog(Shell parent) {
        super(parent);
        selection = -1;
    }

    /**
     * model????
     * @param model
     */
    public void setModel(List<Group> model) {
        this.model = model;
    }

    /**
     * ?
     * @return 
     */
    public Group open() {
        // shell
        Shell parent = getParent();
        Shell shell = new Shell(parent, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
        shell.setText(select_group_title);
        shell.setSize(120, 200);

        // ??
        initLayout(shell);

        // ???
        initTable();

        // ?
        shell.layout();
        shell.open();
        Display display = parent.getDisplay();
        // set dialog to center of screen
        Rectangle dialogRect = shell.getBounds();
        Rectangle displayRect = display.getBounds();
        shell.setLocation((displayRect.width - dialogRect.width) / 2, (displayRect.height - dialogRect.height) / 2);
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        // ???
        if (selection == -1) {
            for (Group g : model) {
                if (g.isDefaultFriend())
                    return g;
            }
            for (Group g : model) {
                if (g.isFriendly())
                    return g;
            }
            return null;
        } else
            return model.get(selection);
    }

    /**
     * ??
     */
    private void initTable() {
        if (model == null)
            return;
        int i = 0;
        for (Group g : model) {
            TableItem ti = new TableItem(table, SWT.NONE);
            ti.setText(g.name);
            ti.setData(new Integer(i++));
        }
    }

    /**
     * ??
     * @param shell
     */
    private void initLayout(final Shell shell) {
        // ?layout
        GridLayout layout = new GridLayout();
        layout.marginHeight = layout.marginWidth = layout.horizontalSpacing = layout.verticalSpacing = 0;
        shell.setLayout(layout);
        // ??
        Label lblHint = new Label(shell, SWT.CENTER);
        lblHint.setText(select_group_label_hint);
        lblHint.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
        // ??table
        table = new Table(shell, SWT.SINGLE | SWT.FULL_SELECTION | SWT.BORDER);
        table.setLayoutData(new GridData(GridData.FILL_BOTH));
        table.addControlListener(new ControlListener() {
            public void controlResized(ControlEvent e) {
                table.getColumn(0).setWidth(table.getClientArea().width);
            }

            public void controlMoved(ControlEvent e) {
                // ??
            }
        });
        table.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                selection = table.getSelectionIndex();
                if (selection != -1)
                    selection = (Integer) table.getItem(selection).getData();
            }
        });
        // 
        new TableColumn(table, SWT.CENTER);
        table.setHeaderVisible(false);
        // 
        Slat btnOK = new Slat(shell, SWT.NONE);
        btnOK.setText(button_ok);
        btnOK.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
        btnOK.addMouseListener(new MouseAdapter() {
            public void mouseUp(MouseEvent e) {
                if (selection == -1)
                    MessageDialog.openWarning(shell, message_box_common_warning_title,
                            message_box_please_select_group);
                else
                    shell.close();
            }
        });
    }
}