MacroChooserViewImpl.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.ide.macro.chooser;

import com.google.gwt.cell.client.TextCell;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.DoubleClickEvent;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.cellview.client.CellTable;
import com.google.gwt.user.cellview.client.Column;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.view.client.ListDataProvider;
import com.google.gwt.view.client.SingleSelectionModel;
import com.google.inject.Inject;

import org.eclipse.che.ide.api.macro.Macro;
import org.eclipse.che.ide.ui.window.Window;

/**
 * The implementation of the {@link MacroChooserView} that shows table for exploring and choosing macros.
 * Also provides ability to filter data in the table.
 *
 * @author Artem Zatsarynnyi
 */
public class MacroChooserViewImpl extends Window implements MacroChooserView {

    private static final MacroChooserViewImplUiBinder UI_BINDER = GWT.create(MacroChooserViewImplUiBinder.class);

    @UiField(provided = true)
    CellTable<Macro> macrosTable;

    @UiField
    TextBox filterField;

    private ActionDelegate delegate;

    @Inject
    public MacroChooserViewImpl(org.eclipse.che.ide.Resources resources) {
        setTitle("Command Macros");

        initMacrosTable(resources);

        setWidget(UI_BINDER.createAndBindUi(this));

        filterField.getElement().setAttribute("placeholder", "Search macro");

        // hide footer
        getFooter().removeFromParent();
    }

    private void initMacrosTable(org.eclipse.che.ide.Resources resources) {
        macrosTable = new CellTable<>(500, resources);

        final Column<Macro, String> nameColumn = new Column<Macro, String>(new TextCell()) {
            @Override
            public String getValue(Macro remote) {
                return remote.getName();
            }
        };

        final Column<Macro, String> descriptionColumn = new Column<Macro, String>(new TextCell()) {
            @Override
            public String getValue(Macro remote) {
                return remote.getDescription();
            }
        };

        macrosTable.addColumn(nameColumn, "Macro");
        macrosTable.setColumnWidth(nameColumn, "40%");
        macrosTable.addColumn(descriptionColumn, "Description");
        macrosTable.setColumnWidth(descriptionColumn, "60%");

        final SingleSelectionModel<Macro> selectionModel = new SingleSelectionModel<>();

        macrosTable.setSelectionModel(selectionModel);

        macrosTable.addDomHandler(event -> {
            if (selectionModel.getSelectedObject() != null) {
                delegate.onMacroChosen(selectionModel.getSelectedObject());
            }
        }, DoubleClickEvent.getType());

        macrosTable.addDomHandler(event -> {
            if (selectionModel.getSelectedObject() != null &&
                (KeyCodes.KEY_ENTER == event.getNativeKeyCode() || KeyCodes.KEY_MAC_ENTER == event.getNativeKeyCode())) {

                delegate.onMacroChosen(selectionModel.getSelectedObject());
            }
        }, KeyUpEvent.getType());
    }

    @Override
    public void setDelegate(ActionDelegate delegate) {
        this.delegate = delegate;
    }

    @Override
    public void show() {
        super.show();

        filterField.setValue("");
        filterField.setFocus(true);
    }

    @Override
    public void close() {
        hide();
    }

    @Override
    public void bindMacrosList(ListDataProvider<Macro> dataProvider) {
        dataProvider.addDataDisplay(macrosTable);
    }

    @UiHandler({"filterField"})
    void onFilterChanged(@SuppressWarnings("UnusedParameters") KeyUpEvent event) {
        delegate.onFilterChanged(filterField.getValue());
    }

    interface MacroChooserViewImplUiBinder extends UiBinder<Widget, MacroChooserViewImpl> {
    }
}