ch.heftix.mailxel.client.CategoryOverviewGrid.java Source code

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Here is the source code for ch.heftix.mailxel.client.CategoryOverviewGrid.java

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/*
 * Copyright (C) 2008-2011 by Simon Hefti. All rights reserved.
 * Licensed under the EPL 1.0 (Eclipse Public License).
 * (see http://www.eclipse.org/legal/epl-v10.html)
 * 
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
 * 
 * Initial Developer: Simon Hefti
 */
package ch.heftix.mailxel.client;

import java.util.ArrayList;
import java.util.List;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.dom.client.KeyPressHandler;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;

import ch.heftix.mailxel.client.to.Category;
import ch.heftix.mailxel.client.to.Constants;

public class CategoryOverviewGrid extends VerticalPanel {

    private List<Category> categories = new ArrayList<Category>();

    public static final int LABEL_ROW = 0;
    public static final int HEADER_ROW_1 = 1;
    public static final int HEADER_ROW_2 = 2;
    public static final int FIRST_PAYLOAD_ROW = 3;

    final FlexTable grid = new FlexTable();

    public CategoryOverviewGrid(final MailServiceAsync mailxelService, final MailxelPanel mailxelPanel) {

        HorizontalPanel toolbar = new HorizontalPanel();

        Image save = new Image("img/save.png");
        save.setTitle("Save");
        save.setStylePrimaryName("mailxel-toolbar-item");
        save.addClickHandler(new ClickHandler() {

            public void onClick(ClickEvent sender) {

                final StatusItem si = mailxelPanel.statusStart("category update");

                List<Category> categoriesToSave = new ArrayList<Category>();

                int len = grid.getRowCount();
                for (int i = FIRST_PAYLOAD_ROW; i < len; i++) {
                    TextBoxWChangeDetection tbS = (TextBoxWChangeDetection) grid.getWidget(i, 0);
                    if (null != tbS && tbS.isDirty()) {
                        // add to save list
                        Category existing = categories.get(i - FIRST_PAYLOAD_ROW);
                        existing.name = tbS.getText();
                        categoriesToSave.add(existing);
                    }
                }

                mailxelService.saveCategories(categoriesToSave, new AsyncCallback<Void>() {

                    public void onFailure(Throwable caught) {
                        si.error(caught);
                    }

                    public void onSuccess(Void result) {
                        si.done();
                    }
                });
            }
        });

        toolbar.add(save);

        Image addCategory = new Image("img/plus.png");
        addCategory.setTitle("New Category");
        addCategory.setStylePrimaryName("mailxel-toolbar-item");
        addCategory.addClickHandler(new ClickHandler() {

            public void onClick(ClickEvent sender) {
                Category cat = new Category();
                cat.id = Constants.UNDEFINED_ID;
                cat.name = "new category";
                categories.add(cat);
                updateGrid(categories);
            }
        });
        toolbar.add(addCategory);

        add(toolbar);

        final TextBox category = new TextBox();
        category.setWidth("400px");

        // header
        grid.setText(LABEL_ROW, 0, "Category");

        final MailxelAsyncCallback<List<Category>> callback = new MailxelAsyncCallback<List<Category>>() {

            private StatusItem si = null;

            public void setStatusItem(StatusItem statusItem) {
                this.si = statusItem;
            }

            public void onSuccess(List<Category> result) {

                categories = result;
                int row = updateGrid(result);
                si.done("found " + Integer.toString(row - FIRST_PAYLOAD_ROW) + " categories.", 0);
            }

            public void onFailure(Throwable caught) {
                si.error(caught);
            }
        };

        // final KeyboardListenerAdapter kbla = new KeyboardListenerAdapter() {
        //
        // public void onKeyPress(Widget sender, char keyCode, int modifiers) {
        // if (KEY_ENTER == keyCode) {
        // String snTxt = UIUtil.trimNull(category.getText());
        //
        // mailxelPanel.setStatus("category search started");
        //
        // mailxelService.searchCategories(snTxt, callback);
        // }
        // }
        // };

        final KeyPressHandler kbla = new KeyPressHandler() {

            public void onKeyPress(KeyPressEvent event) {
                if (KeyCodes.KEY_ENTER == event.getCharCode()) {
                    String snTxt = UIUtil.trimNull(category.getText());

                    StatusItem si = mailxelPanel.statusStart("category search");
                    callback.setStatusItem(si);
                    mailxelService.searchCategories(snTxt, callback);

                }
            }
        };

        category.addKeyPressHandler(kbla);

        grid.setWidget(HEADER_ROW_1, 0, category);

        add(grid);
    }

    private int updateGrid(final List<Category> categories) {
        // clean all except header
        int rows = grid.getRowCount();
        for (int i = rows - 1; i >= FIRST_PAYLOAD_ROW; i--) {
            grid.removeRow(i);
        }

        int row = FIRST_PAYLOAD_ROW;
        for (Category category : categories) {
            TextBoxWChangeDetection aTB = new TextBoxWChangeDetection();
            aTB.setText(category.name);
            aTB.setWidth("400px");
            grid.setWidget(row, 0, aTB);
            row++;
        }

        return row;
    }
}