com.google.gwt.gen2.demo.scrolltable.client.option.data.InsertDataRowOption.java Source code

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Here is the source code for com.google.gwt.gen2.demo.scrolltable.client.option.data.InsertDataRowOption.java

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/*
 * Copyright 2008 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.google.gwt.gen2.demo.scrolltable.client.option.data;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.gen2.demo.scrolltable.client.PagingScrollTableDemo;
import com.google.gwt.gen2.demo.scrolltable.client.ScrollTableDemo;
import com.google.gwt.gen2.demo.scrolltable.client.option.AbstractOption;
import com.google.gwt.gen2.demo.scrolltable.client.option.CustomForm;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;

/**
 * An option.
 */
public class InsertDataRowOption extends AbstractOption {
    @Override
    protected String getDescription() {
        return "Insert a row at a specified index";
    }

    @Override
    protected Widget onInitialize() {
        CustomForm form = new CustomForm();

        // Row selection
        final TextBox rowBox = new TextBox();
        rowBox.setText("3");
        rowBox.setWidth("50px");
        form.addLabeledWidget("Row Index:", rowBox);

        // Add button to insert one row
        {
            Button button = new Button("Insert 1 Row", new ClickHandler() {
                public void onClick(ClickEvent event) {
                    try {
                        int row = Integer.parseInt(rowBox.getText());
                        insertDataRows(row, 1);
                    } catch (NumberFormatException e) {
                        Window.alert("Please enter valid integers for the row and column.");
                    } catch (IndexOutOfBoundsException e) {
                        Window.alert("The row or column index you entered is out of bounds.");
                    }
                }
            });
            form.addButton(button);
        }

        // Add button to insert 10 rows
        {
            Button button = new Button("Insert 10 Rows", new ClickHandler() {
                public void onClick(ClickEvent event) {
                    try {
                        int row = Integer.parseInt(rowBox.getText());
                        insertDataRows(row, 10);
                    } catch (NumberFormatException e) {
                        Window.alert("Please enter valid integers for the row and column.");
                    } catch (IndexOutOfBoundsException e) {
                        Window.alert("The row or column index you entered is out of bounds.");
                    }
                }
            });
            form.addButton(button);
        }

        // Add button to insert 100 rows
        {
            Button button = new Button("Insert 100 Rows", new ClickHandler() {
                public void onClick(ClickEvent event) {
                    try {
                        int row = Integer.parseInt(rowBox.getText());
                        insertDataRows(row, 100);
                    } catch (NumberFormatException e) {
                        Window.alert("Please enter valid integers for the row and column.");
                    } catch (IndexOutOfBoundsException e) {
                        Window.alert("The row or column index you entered is out of bounds.");
                    }
                }
            });
            form.addButton(button);
        }

        // Add button to remove a row
        {
            Button button = new Button("Remove Row", new ClickHandler() {
                public void onClick(ClickEvent event) {
                    try {
                        int row = Integer.parseInt(rowBox.getText());
                        ScrollTableDemo.get().getDataTable().removeRow(row);
                    } catch (NumberFormatException e) {
                        Window.alert("Please enter valid integers for the row and column.");
                    } catch (IndexOutOfBoundsException e) {
                        Window.alert("The row or column index you entered is out of bounds.");
                    }
                }
            });
            form.addButton(button);
        }

        return form;
    }

    /**
     * Insert rows at the specified index.
     * 
     * @param beforeRow the row index
     * @param numRows the number of rows to insert
     */
    private void insertDataRows(int beforeRow, int numRows) {
        boolean paging = PagingScrollTableDemo.get() != null;
        for (int i = beforeRow; i < beforeRow + numRows; i++) {
            if (paging) {
                PagingScrollTableDemo.get().insertDataRow(i);
            } else {
                ScrollTableDemo.get().insertDataRow(i);
            }
        }
    }
}