package swt;

import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

import java.util.*;


/*
 * Main.java
 *
 * All rights reserved, Copyright(C) 2004 Oki Electric Industry Co.,Ltd.
 */
public class Main {
    private static final int TABLE_ROW_COUNT = 10000;
    private static final int TABLE_COLUMN_COUNT = 3;
    private Table table;
    private Button viewBtn;
    private Button exitBtn;

    public Main(Shell shell) {
        // レイアウト、コンポーネントの生成
        initComponent(shell);

        // イベントハンドラの設定
        setEventHandler(shell);
    }

    private void initComponent(Shell shell) {
        // レイアウト。
        FormLayout layout = new FormLayout();
        shell.setLayout(layout);

        // テーブル生成
        FormData tableData = new FormData();
        tableData.top = new FormAttachment(0, 0);
        tableData.left = new FormAttachment(0, 0);
        tableData.right = new FormAttachment(100, -5);
        tableData.bottom = new FormAttachment(93, -5);
        createTable(shell);
        table.setLayoutData(tableData);

        // table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        // ↑対応するメソッドが無い？
        // ボタン生成
        viewBtn = new Button(shell, SWT.PUSH);
        viewBtn.setText("view");

        FormData viewData = new FormData();
        viewData.top = new FormAttachment(93, 0);
        viewData.left = new FormAttachment(80, 0);
        viewData.right = new FormAttachment(90, -5);
        viewData.bottom = new FormAttachment(100, -5);
        viewBtn.setLayoutData(viewData);

        exitBtn = new Button(shell, SWT.PUSH);
        exitBtn.setText("exit");

        FormData exitData = new FormData();
        exitData.top = new FormAttachment(93, 0);
        exitData.left = new FormAttachment(90, 0);
        exitData.right = new FormAttachment(100, -5);
        exitData.bottom = new FormAttachment(100, -5);
        exitBtn.setLayoutData(exitData);
    }

    private void setEventHandler(final Shell shell) {
        // viewボタン
        viewBtn.addSelectionListener(new SelectionAdapter() {
                public void widgetSelected(SelectionEvent e) {
                    //	テーブルから選択行の情報の取得
                    String[] row = getSelectedRow();

                    if (row == null) {
                        MessageBox box = new MessageBox(shell,
                                SWT.NULL | SWT.ICON_ERROR);
                        box.setMessage("行が選択されていません");
                        box.open();

                        return;
                    } else {
                        // ダイアログ表示用Shell
                        Shell child = new Shell(shell,
                                SWT.DIALOG_TRIM | SWT.PRIMARY_MODAL);
                        MyDialog dialog = new MyDialog(child, row);
                        dialog.open();
                    }
                }
            });

        // exitボタン
        exitBtn.addSelectionListener(new SelectionAdapter() {
                public void widgetSelected(SelectionEvent e) {
                    windowClose();
                }
            });
    }

    private String[] getSelectedRow() {
        java.util.List row = new ArrayList();
        int selectedCount = table.getSelectionCount();

        if (selectedCount <= 0) { // 行が選択されていない

            return null;
        } else { // 行が選択されている

            TableItem[] items = table.getSelection();

            for (int i = 0; i < TABLE_COLUMN_COUNT; i++) {
                row.add(items[0].getText(i));
            }
        }

        return (String[]) row.toArray(new String[0]);
    }

    private void windowClose() {
        System.exit(0);
    }

    private void createTable(Composite composite) {
        table = new Table(composite, SWT.MULTI | SWT.FULL_SELECTION |
                SWT.BORDER);
        // 罫線を表示する
        table.setLinesVisible(true);
        // ヘッダを可視にする
        table.setHeaderVisible(true);

        // ヘッダを設定
        String[] cols = { "A", "B", "C" };

        for (int i = 0; i < cols.length; i++) {
            TableColumn col = new TableColumn(table, SWT.LEFT);
            col.setText(cols[i]);
            col.setWidth(100);
        }

        for (int i = 0; i < TABLE_ROW_COUNT; i++) {
            TableItem item = new TableItem(table, SWT.NULL);
            java.util.List row = new ArrayList();

            for (int j = 0; j < TABLE_COLUMN_COUNT; j++) {
                row.add("cell" + (i + 1) + ":" + (j + 1));
            }

            item.setText((String[]) row.toArray(new String[0]));
        }
    }

    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        Main main = new Main(shell);

        shell.setText("SWT Table Example");

        shell.setSize(600, 400);

        //shell.pack();
        shell.open();

        // 窓が閉じるまでメインスレッドを終了しない
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }

        display.dispose();
    }

    /**
     * テーブル選択行の内容を表示するダイアログ
     * @author Hiroshi Ogawa
     */
    class MyDialog {
        private Shell shell;
        private String result;

        public MyDialog(Shell shell, String[] row) {
            this.shell = shell;

            // レイアウト、コンポーネントの生成
            initComponent(shell, row);
        }

        private void initComponent(final Shell shell, String[] row) {
            int rowCount = row.length;

            GridLayout layout = new GridLayout();
            layout.numColumns = 1;
            shell.setLayout(layout);

            for (int i = 0; i < rowCount; i++) {
                Label label = new Label(shell, SWT.NULL);
                label.setText(row[i]);
            }

            Button closeBtn = new Button(shell, SWT.PUSH);
            closeBtn.setText("close");
            closeBtn.addSelectionListener(new SelectionAdapter() {
                    public void widgetSelected(SelectionEvent e) {
                        shell.close(); // これは不要？
                        shell.dispose();
                    }
                });
        }

        public String open() {
            shell.pack();
            shell.open();

            // 窓が消滅するまで待機
            while (!shell.isDisposed()) {
                if (!shell.getDisplay().readAndDispatch()) {
                    shell.getDisplay().sleep();
                }
            }

            return result;
        }
    }
}