学用Java

奇新Java控件---Java控件提供商和Java RIA, Web, J2ME解决方案开发商

介绍JComponentPack产品中的JListView控件


If you want to implements the Windows explorer like feature in Java swing application, the JListView component meets your requirements exactly.

The JListView component support the 5 different view modes: small icon, large icon, list, thumbnails, details, all these view mode can change on the fly, the methods “JListView.setViewMode” can change the view mode of JListView component.

The JListView component have the MVC design concept, a simple TableModel can be provided for it’s data, a simple CellProvider such IconProvider can be provided for it’s icon. Should write a DefaultCellRenderer subclass for its renderer and DefaultCellEditor subclass for it’s editor. The article “Introduce Cell Renderer” introduce why using the DefaultCellRenderer.

The JListView component use a ListSelectionModel as it’s selection model, you can change the selection model’s mode, it support single selection, single interval selection, multiple interval selection, you can use the following methods to get the selected values:

      JListView.getSelectedValue(); // get the lead selection value
       JListView.getSelectedValues(); // get all selected values

The JListView component provides several methods for it’s editing:
       JListView.isEditing(); // determines whether the JListView is being edited.
       JListView.cancelEditing(); // cancel current editing
       JListView.stopEditing(); // stop the current editing and apply the editing value
       JListView.startEditingAtIndex(); // start the editing at the specified index
       JListview.getEditingInex(); // get the current editing object’s index

The com.zfqjava.swing.model and com.zfqjava.swing.cell package have the FileTableModel and FileProvider, it support the directory list and file icon directly, the following code can create a explorer like GUI:

       JListView listView = new JListView();
       listView.setListData(new FileTableModel(new File(System.getProperty("user.home"))));
       listView.setCellRenderer(new FileCellRenderer());
       listView.setCellEditor(new FileCellEditor());

The JListView component also support row sorting, the TableModel you provided for JListView only need implements the ColumnSorter interface, it can support the row sorting automatically, we want to improve this area after upgrade the JRE version to 1.6.

The JListView component provides several important client property:

JListView.rowSelectionAllowed” allow the full row can be selected
JListView.showVerticalLines” shows the vertical lines in details view mode.
JListView.showHorizontalLines” shows the horizontal lines in details view mode.
JListView.backgroundImage” sets the background image for JListView component.

For details, you can view the JListView JavaDoc API documentation.

The JListView also support the Drag and Drop, but in JComponentPack 1.1.0 and early version, implements this feature has trick and tips:

       // get JTable and JList
       BasicListViewUI ui = (BasicListViewUI)listView.getUI();
       JTable table = ui.getTable();
       JList list = ui.getList();
       table.setDragEnabled(true);
       list.setDragEnabled(true);
       TransferHandler th = new TransferHandler() {             
              public int getSourceActions(JComponent c) {
               return COPY;
        }
              protected Transferable createTransferable(JComponent c) {
                  // just a test
                  Object o = listView.getSelectedValue();
                  if(o != null) {
                     return new StringSelection(o.toString());
                  }
                  return null;
              }
           };
       table.setTransferHandler(th);
       list.setTransferHandler(th);

In the upcoming version JComponentPack 1.2.0, we have improved this area, so in the new version, implements the drag and drop feature is very simple:

       listView.setDragEnabled(true);
TransferHandler th = new TransferHandler() {
              public int getSourceActions(JComponent c) {
               return COPY;
        }

              protected Transferable createTransferable(JComponent c) {
                  // just a test
                  Object o = listView.getSelectedValue();
                  if(o != null) {
                     return new StringSelection(o.toString());
                  }
                  return null;
              }
           };
       listView. setTransferHandler(th);


If you want to implements the Windows explorer like feature in Java swing application, the JListView component meets your requirements exactly.

The JListView component support the 5 different view modes: small icon, large icon, list, thumbnails, details, all these view mode can change on the fly, the methods “JListView.setViewMode” can change the view mode of JListView component.

The JListView component have the MVC design concept, a simple TableModel can be provided for it’s data, a simple CellProvider such IconProvider can be provided for it’s icon. Should write a DefaultCellRenderer subclass for its renderer and DefaultCellEditor subclass for it’s editor. The article “Introduce Cell Renderer” introduce why using the DefaultCellRenderer.

The JListView component use a ListSelectionModel as it’s selection model, you can change the selection model’s mode, it support single selection, single interval selection, multiple interval selection, you can use the following methods to get the selected values:

      JListView.getSelectedValue(); // get the lead selection value
       JListView.getSelectedValues(); // get all selected values

The JListView component provides several methods for it’s editing:
       JListView.isEditing(); // determines whether the JListView is being edited.
       JListView.cancelEditing(); // cancel current editing
       JListView.stopEditing(); // stop the current editing and apply the editing value
       JListView.startEditingAtIndex(); // start the editing at the specified index
       JListview.getEditingInex(); // get the current editing object’s index

The com.zfqjava.swing.model and com.zfqjava.swing.cell package have the FileTableModel and FileProvider, it support the directory list and file icon directly, the following code can create a explorer like GUI:

       JListView listView = new JListView();
       listView.setListData(new FileTableModel(new File(System.getProperty("user.home"))));
       listView.setCellRenderer(new FileCellRenderer());
       listView.setCellEditor(new FileCellEditor());

The JListView component also support row sorting, the TableModel you provided for JListView only need implements the ColumnSorter interface, it can support the row sorting automatically, we want to improve this area after upgrade the JRE version to 1.6.

The JListView component provides several important client property:

JListView.rowSelectionAllowed” allow the full row can be selected
JListView.showVerticalLines” shows the vertical lines in details view mode.
JListView.showHorizontalLines” shows the horizontal lines in details view mode.
JListView.backgroundImage” sets the background image for JListView component.

For details, you can view the JListView JavaDoc API documentation.

The JListView also support the Drag and Drop, but in JComponentPack 1.1.0 and early version, implements this feature has trick and tips:

       // get JTable and JList
       BasicListViewUI ui = (BasicListViewUI)listView.getUI();
       JTable table = ui.getTable();
       JList list = ui.getList();
       table.setDragEnabled(true);
       list.setDragEnabled(true);
       TransferHandler th = new TransferHandler() {             
              public int getSourceActions(JComponent c) {
               return COPY;
        }
              protected Transferable createTransferable(JComponent c) {
                  // just a test
                  Object o = listView.getSelectedValue();
                  if(o != null) {
                     return new StringSelection(o.toString());
                  }
                  return null;
              }
           };
       table.setTransferHandler(th);
       list.setTransferHandler(th);

In the upcoming version JComponentPack 1.2.0, we have improved this area, so in the new version, implements the drag and drop feature is very simple:

       listView.setDragEnabled(true);
TransferHandler th = new TransferHandler() {
              public int getSourceActions(JComponent c) {
               return COPY;
        }

              protected Transferable createTransferable(JComponent c) {
                  // just a test
                  Object o = listView.getSelectedValue();
                  if(o != null) {
                     return new StringSelection(o.toString());
                  }
                  return null;
              }
           };
       listView. setTransferHandler(th);



posted on 2009-02-25 10:56 fralepg 阅读(515) 评论(0)  编辑  收藏


只有注册用户登录后才能发表评论。


网站导航:
 
<2009年2月>
25262728293031
1234567
891011121314
15161718192021
22232425262728
1234567

导航

统计

公告

JComponentPack 3.0正式发布 功能介绍

JComponentPack 是一个基于Java SwingGUI类库,一系列可视化的JavaBeans集合,它基于SwingMVC架构,是100%的纯Java类库,它包括20多个Swing 所没有的控件

试用版下载(点击下载

常用链接

留言簿(1)

随笔档案

文章档案

搜索

最新评论

阅读排行榜

评论排行榜