zbookview.java

用Java写的报表.功能如下: 0.内建网络打印,网络预览功能！ 1.文件操作。包括url 指定的文件。 2.全功能打印支持。包括打印预览。 3.Undo 和 redo。 4.合并单元格。 5.Cel

/*
 * Copyright 2002 EZCell , Inc. All rights reserved.
 * Version  1.0.
 * Author   W.John
 */
package ezcell;
import javax.swing.text.JTextComponent;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import javax.swing.JComponent;
import javax.swing.JTabbedPane;
import javax.swing.event.ChangeEvent;


/**
 * Used to hold all sheets of a book except page header and footer
 *
 */
public class ZBookView extends JTabbedPane implements ZBookStateListener {
    /**
     *  The value is set in constructor, it keeps alive with me,
     */
    private ZBookState bookState;

    /**
     *  To listen to title change of any sheet ,If change occurs, change that tab's title contains the sheet,
     *  An instance be created in constructor. When setBookState or sheetAdded, hook this listener to them.
     */
    ZSheetStateListener listener;

    /**
     * put your documentation comment here
     * @param     ZBookState bookState
     */
    public ZBookView(ZBookState bookState) {
        listener = new ZSheetStateAdapter() {
            /**
             * listen to whether any sheet title been changed, in that case , change tabs's title as well
             * @param sheetState ,indicates where the change from
             */
            public void sheetPropertyChanged(ZSheetState sheetState) {
                int i = indexOfComponent(getComponent(sheetState));

                if (sheetState.getSheet().getTitle().equals(getTitleAt(i))) {
                    return;
                }

                setTitleAt(i, sheetState.getSheet().getTitle());
            }
        };


        setTabPlacement(JTabbedPane.BOTTOM);
        bookState.addListener(this);
        setBookState(bookState);
        this.addComponentListener(new ComponentAdapter() {
            /**
             * put your documentation comment here
             * @param componentEvent
             */
            public void componentShown(ComponentEvent componentEvent) {
                fireStateChanged();
            }
        });
        this.addFocusListener(new FocusAdapter() {
            /**
             * put your documentation comment here
             * @param e
             */
            public void focusGained(FocusEvent e) {
                ((JComponent) getSelectedComponent()).requestFocus();
            }
        });
    }

    /**
     * Query the sheetState in the selected tab . if tabs is empty, return null
     * @return
     */
    public ZSheetState getActiveSheetState() {
        ZSheetView view = (ZSheetView) getSelectedComponent();

        if (view == null) {
            return null;
        }

        return view.getSheetState();
    }

    /**
     * find a tab by a ZSheetState
     * @param sheetState
     * @return
     */
    public ZSheetView getComponent(ZSheetState sheetState) {
        for (int i = 0; i < this.getComponentCount(); i++)
            if (((ZSheetView) getComponent(i)).getSheetState() == sheetState) {
                return (ZSheetView) getComponent(i);
            }

        return null;
    }

    /**
     * Make any tab's scroll bars visible or invisible.
     * @param visible
     */
    public void setScrollbarVisible(boolean visible) {
        for (int i = 0; i < this.getComponentCount(); i++) {
            ZSheetView view = (ZSheetView) this.getComponent(i);
            view.setScrollbarVisible(visible);
        }
    }

    /**
     * put your documentation comment here
     * @param e
     */
    public void activeCellChanged(ChangeEvent e) {
    }

    /**
     * put your documentation comment here
     * @param e
     */
    public void activeChanged(ChangeEvent e) {
        ZBookState bookState = (ZBookState) e.getSource();
        ZSheetView view = (ZSheetView) getSelectedComponent();

        if (view == null) {
            return;
        }

        ZSheetState sheetState = view.getSheetState();

        if (bookState.getActive() == sheetState) {
            return;
        }

        view = getComponent(bookState.getActive());

        if (view != null) {
            setSelectedComponent(view);
        }
    }

    /**
     * put your documentation comment here
     * @param e
     */
    public void bookChanged(ChangeEvent e) {
        setBookState((ZBookState) e.getSource());
    }

    /**
     * put your documentation comment here
     * @param e
     */
    public void footerAdded(ChangeEvent e) {
    }

    /**
     * put your documentation comment here
     * @param e
     */
    public void footerRemoved(ChangeEvent e) {
    }

    /**
     * put your documentation comment here
     * @param e
     */
    public void headerAdded(ChangeEvent e) {
    }

    /**
     * put your documentation comment here
     * @param e
     */
    public void headerRemoved(ChangeEvent e) {
    }

    /**
     * put your documentation comment here
     * @param e
     */
    public void pageFormatChanged(ChangeEvent e) {
    }

    /**
     * put your documentation comment here
     * @param e
     * @param sheetState
     */
    public void sheetAdded(ChangeEvent e, ZSheetState sheetState) {
        ZSheetView view = new ZSheetView(sheetState);
        add(sheetState.getSheet().getTitle(), view);
        sheetState.addListener(listener);
    }

    /**
     * put your documentation comment here
     * @param e
     * @param sheetState
     */
    public void sheetRemoved(ChangeEvent e, ZSheetState sheetState) {
        remove(indexOfComponent(getComponent(sheetState)));
    }

    /**
     * put your documentation comment here
     * @param bookState
     */
    private void setBookState(ZBookState bookState) {
        removeAll();
        this.bookState = bookState;

        int size = bookState.getCount();

        for (int i = 0; i < size; i++) {
            ZSheetState sheetState = bookState.getSheetState(i);
            sheetState.addListener(listener);

            ZSheetView view = new ZSheetView(sheetState);
            add(sheetState.getSheet().getTitle(), view);
        }
    }
}