com.google.testing.testify.risk.frontend.client.view.impl.DataRequestViewImpl.java Source code

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Here is the source code for com.google.testing.testify.risk.frontend.client.view.impl.DataRequestViewImpl.java

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// Copyright 2010 Google Inc. All Rights Reseved.
//
// 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.testing.testify.risk.frontend.client.view.impl;

import com.google.common.collect.Lists;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.event.dom.client.ClickEvent;
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.client.Window;
import com.google.gwt.user.client.ui.Anchor;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.testing.testify.risk.frontend.client.view.DataRequestView;
import com.google.testing.testify.risk.frontend.client.view.widgets.ConstrainedParameterWidget;
import com.google.testing.testify.risk.frontend.client.view.widgets.CustomParameterWidget;
import com.google.testing.testify.risk.frontend.client.view.widgets.DataRequestParameterWidget;
import com.google.testing.testify.risk.frontend.model.DataRequestOption;

import java.util.List;

// TODO(chrsmith): Provide a readonly mode for non-editor users.

/**
 * Widget for displaying a DataRequest.
 *
 * @author chrsmith@google.com (Chris Smith)
 */
public class DataRequestViewImpl extends Composite implements DataRequestView {

    /** Wire parent class to associated UI Binder. */
    interface DataRequestViewImplUiBinder extends UiBinder<Widget, DataRequestViewImpl> {
    }

    private static final DataRequestViewImplUiBinder uiBinder = GWT.create(DataRequestViewImplUiBinder.class);

    @UiField
    protected Label dataRequestSourceName;

    @UiField
    protected VerticalPanel dataRequestParameters;

    @UiField
    protected Anchor addParameterLink;

    @UiField
    protected Button updateDataRequest;

    @UiField
    protected Button cancelUpdateDataRequest;

    @UiField
    protected Image deleteDataRequestImage;

    /** List of allowable values for a parameter key. null if arbitrary keys allowed. */
    private final List<String> parameterKeyConstraint = Lists.newArrayList();

    /** Presenter associated with this View */
    private Presenter presenter;

    public DataRequestViewImpl() {
        initWidget(uiBinder.createAndBindUi(this));
    }

    /** When the user clicks the 'add parameter' link, add a new parameter to the end of the list. */
    @UiHandler("addParameterLink")
    protected void handleAddParameterLinkClick(ClickEvent event) {
        dataRequestParameters.add((Widget) createRequestWidget("", ""));
    }

    @UiHandler("updateDataRequest")
    void onUpdateDataRequestClicked(ClickEvent event) {
        // Gather up all parameters and notify the presenter.
        List<DataRequestOption> newOptions = Lists.newArrayList();
        for (Widget widget : dataRequestParameters) {
            DataRequestParameterWidget parameterWidget = (DataRequestParameterWidget) widget;
            newOptions.add(
                    new DataRequestOption(parameterWidget.getParameterKey(), parameterWidget.getParameterValue()));
        }

        presenter.onUpdate(newOptions);
    }

    @UiHandler("cancelUpdateDataRequest")
    void onCancelUpdateDataRequestClicked(ClickEvent event) {
        presenter.refreshView();
    }

    /**
     * Handler for the deleteComponentImage's click event, removing the Component.
     */
    @UiHandler("deleteDataRequestImage")
    void onDeleteComponentImageClicked(ClickEvent event) {
        String promptText = "Are you sure you want to remove this data request?";
        if (Window.confirm(promptText)) {
            presenter.onRemove();
        }
    }

    /**
     * Initialize this View's Presenter object. (For two-way communication.)
     */
    @Override
    public void setPresenter(Presenter presenter) {
        this.presenter = presenter;
    }

    @Override
    public Widget asWidget() {
        return this;
    }

    /**
     * Hides the given Widget, equivalent to setVisible(false).
     */
    @Override
    public void hide() {
        this.setVisible(false);
    }

    @Override
    public void setDataSourceName(String dataSourceName) {
        dataRequestSourceName.setText(dataSourceName);
    }

    private DataRequestParameterWidget createRequestWidget(String name, String value) {
        final DataRequestParameterWidget param;
        if (parameterKeyConstraint != null) {
            param = new ConstrainedParameterWidget(parameterKeyConstraint, name, value);
        } else {
            param = new CustomParameterWidget(name, value);
        }
        param.addChangeHandler(new ChangeHandler() {
            @Override
            public void onChange(ChangeEvent arg0) {
                Widget w = (Widget) param;
                dataRequestParameters.remove(w);
            }
        });
        return param;
    }

    @Override
    public void setDataSourceParameters(List<String> keyValues, List<DataRequestOption> options) {
        parameterKeyConstraint.clear();
        parameterKeyConstraint.addAll(keyValues);
        dataRequestParameters.clear();

        for (DataRequestOption option : options) {
            dataRequestParameters.add((Widget) createRequestWidget(option.getName(), option.getValue()));
        }

        // If there are no parameters already, add a blank line to encourage them to add some.
        if (options.size() < 1) {
            handleAddParameterLinkClick(null);
        }
    }
}