listdialog.java

SWING的界面UI包 SWING的界面UI包

                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jSeparator1, javax.swing.GroupLayout.DEFAULT_SIZE, 79, Short.MAX_VALUE)
                    .addComponent(btnAdd, javax.swing.GroupLayout.DEFAULT_SIZE, 79, Short.MAX_VALUE)
                    .addComponent(btnUpdate, javax.swing.GroupLayout.DEFAULT_SIZE, 79, Short.MAX_VALUE)
                    .addComponent(btnRemove, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(btnUp, javax.swing.GroupLayout.DEFAULT_SIZE, 79, Short.MAX_VALUE)
                    .addComponent(btnDown, javax.swing.GroupLayout.DEFAULT_SIZE, 79, Short.MAX_VALUE))
                .addContainerGap())
        );

        jPanel1Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {btnAdd, btnDown, btnRemove, btnUp, btnUpdate});

        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(btnAdd)
                    .addComponent(txtItem, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addComponent(btnUpdate)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(btnRemove)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jSeparator1, javax.swing.GroupLayout.PREFERRED_SIZE, 6, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(btnUp)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(btnDown))
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 180, Short.MAX_VALUE))
                .addContainerGap())
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addComponent(btnOK)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(btnRestore)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(btnCancel)))
                .addContainerGap())
        );

        layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {btnCancel, btnOK, btnRestore});

        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(btnCancel)
                    .addComponent(btnRestore)
                    .addComponent(btnOK))
                .addContainerGap())
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void btnCancelActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnCancelActionPerformed
        OK = false;
        dispose();
    }//GEN-LAST:event_btnCancelActionPerformed

    private void btnRestoreActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnRestoreActionPerformed
        this.model = default_value;
        OK = true;
        dispose();
    }//GEN-LAST:event_btnRestoreActionPerformed

    private void btnOKActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnOKActionPerformed
        DefaultListModel lstModel = (DefaultListModel) lstItems.getModel();
        model = createListModel();
        for (int i = 0; i < lstModel.getSize(); i++) {
            addModelElement(model, lstModel.getElementAt(i));
        }
        OK = true;
        dispose();
    }//GEN-LAST:event_btnOKActionPerformed
    protected abstract void addModelElement(ListModel model, Object object);
    private void btnAddActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnAddActionPerformed
        String txt = txtItem.getText();
        if (txt.trim().length() > 0) {
            DefaultListModel model = (DefaultListModel) lstItems.getModel();
            model.addElement(txt);
            updateButtons();
            lstItems.repaint();
            txtItem.selectAll();
            txtItem.requestFocus();
        }
    }//GEN-LAST:event_btnAddActionPerformed

    private void txtItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_txtItemActionPerformed
        btnAddActionPerformed(evt);
    }//GEN-LAST:event_txtItemActionPerformed

    private void lstItemsValueChanged(javax.swing.event.ListSelectionEvent evt) {//GEN-FIRST:event_lstItemsValueChanged
        updateButtons();
    }//GEN-LAST:event_lstItemsValueChanged

    private void btnUpdateActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnUpdateActionPerformed
        int index = lstItems.getSelectedIndex();
        if (index != -1) {
            String txt = txtItem.getText();
            DefaultListModel lstModel = (DefaultListModel) lstItems.getModel();
            lstModel.setElementAt(txt, index);
            lstItems.repaint();
        }
    }//GEN-LAST:event_btnUpdateActionPerformed

    private void btnRemoveActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnRemoveActionPerformed
        int index = lstItems.getSelectedIndex();
        if (index != -1) {
            DefaultListModel lstModel = (DefaultListModel) lstItems.getModel();
            lstModel.remove(index);
            updateButtons();
            lstItems.repaint();
        }
    }//GEN-LAST:event_btnRemoveActionPerformed

    private void btnUpActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnUpActionPerformed
        int index = lstItems.getSelectedIndex();
        if (index > 0) {
            DefaultListModel lstModel = (DefaultListModel) lstItems.getModel();
            Object item = lstModel.getElementAt(index);
            lstModel.remove(index);
            index--;
            lstModel.insertElementAt(item, index);
            lstItems.setSelectedIndex(index);
            updateButtons();
            lstItems.repaint();
        }
    }//GEN-LAST:event_btnUpActionPerformed

    private void btnDownActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnDownActionPerformed
        int index = lstItems.getSelectedIndex();
        int count = lstItems.getModel().getSize();
        if (index < count - 1) {
            DefaultListModel lstModel = (DefaultListModel) lstItems.getModel();
            Object item = lstModel.getElementAt(index);
            lstModel.remove(index);
            index++;
            lstModel.insertElementAt(item, index);
            lstItems.setSelectedIndex(index);
            updateButtons();
            lstItems.repaint();
        }
    }//GEN-LAST:event_btnDownActionPerformed

    private void updateButtons() {
        int index = lstItems.getSelectedIndex();
        String txt = txtItem.getText();
        int count = lstItems.getModel().getSize();
        boolean selected = index != -1;
        boolean empty = txt == null || txt.trim().length() == 0;
        boolean first = index == 0;
        boolean last = index == count - 1;
        btnAdd.setEnabled(!empty);
        btnUpdate.setEnabled(selected && !empty);
        btnRemove.setEnabled(selected);
        btnUp.setEnabled(selected && !first);
        btnDown.setEnabled(selected && !last);
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton btnAdd;
    private javax.swing.JButton btnCancel;
    private javax.swing.JButton btnDown;
    private javax.swing.JButton btnOK;
    private javax.swing.JButton btnRemove;
    private javax.swing.JButton btnRestore;
    private javax.swing.JButton btnUp;
    private javax.swing.JButton btnUpdate;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JSeparator jSeparator1;
    private javax.swing.JList lstItems;
    private javax.swing.JTextField txtItem;
    // End of variables declaration//GEN-END:variables
}