// 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.ClickEvent;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
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.CheckBox;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.TextArea;
import com.google.gwt.user.client.ui.Widget;
import com.google.testing.testify.risk.frontend.client.util.NotificationUtil;
import com.google.testing.testify.risk.frontend.client.view.ComponentView;
import com.google.testing.testify.risk.frontend.client.view.widgets.EditableLabel;
import com.google.testing.testify.risk.frontend.client.view.widgets.LabelWidget;
import com.google.testing.testify.risk.frontend.model.AccLabel;
import java.util.Collection;
import java.util.List;
//TODO(chrsmith): Merge ComponentViewImpl and AttributeViewImpl into a single widget.
/**
* Widget for displaying a Component.
*
* @author chrsmith@google.com (Chris Smith)
*/
public class ComponentViewImpl extends Composite implements ComponentView {
/**
* Used to wire parent class to associated UI Binder.
*/
interface ComponentViewImplUiBinder extends UiBinder<Widget, ComponentViewImpl> { }
private static final ComponentViewImplUiBinder uiBinder =
GWT.create(ComponentViewImplUiBinder.class);
@UiField
protected Label componentGripper;
@UiField
protected EditableLabel componentName;
@UiField
protected TextArea description;
@UiField
protected Label componentId;
@UiField
protected Image deleteComponentImage;
@UiField
protected FlowPanel labelsPanel;
@UiField
protected CheckBox signoffBox;
private LabelWidget addLabelWidget;
/** Presenter associated with this View */
private Presenter presenter;
private final Collection<String> labelSuggestions = Lists.newArrayList();
private boolean editingEnabled;
public ComponentViewImpl() {
initWidget(uiBinder.createAndBindUi(this));
description.getElement().setAttribute("placeholder", "Enter description of this component...");
}
@UiHandler("signoffBox")
protected void onSignoffClicked(ClickEvent event) {
presenter.updateSignoff(signoffBox.getValue());
}
/** Wires renaming the Component in the UI to the backing presenter. */
@UiHandler("componentName")
protected void onComponentNameChanged(ValueChangeEvent<String> event) {
if (presenter != null) {
if (event.getValue().length() == 0) {
NotificationUtil.displayErrorMessage("Invalid name for Component.");
presenter.refreshView();
} else {
presenter.onRename(event.getValue());
}
}
}
@UiHandler("description")
protected void onDescriptionChange(ChangeEvent event) {
presenter.onDescriptionEdited(description.getText());
}
/**
* Handler for the deleteComponentImage's click event, removing the Component.
*/
@UiHandler("deleteComponentImage")
protected void onDeleteComponentImageClicked(ClickEvent event) {
String promptText = "Are you sure you want to remove " + componentName.getText() + "?";
if (Window.confirm(promptText)) {
presenter.onRemove();
}
}
/**
* Updates the label suggestions for all labels on this view.
*/
public void setLabelSuggestions(Collection<String> labelSuggestions) {
this.labelSuggestions.clear();
this.labelSuggestions.addAll(labelSuggestions);
for (Widget w : labelsPanel) {
if (w instanceof LabelWidget) {
LabelWidget l = (LabelWidget) w;
l.setLabelSuggestions(this.labelSuggestions);
}
}
}
/**
* Displays a new Component Label on this Widget.
*/
public void displayLabel(final AccLabel label) {
final LabelWidget labelWidget = new LabelWidget(label.getLabelText());
labelWidget.setLabelSuggestions(labelSuggestions);
labelWidget.setEditable(editingEnabled);
labelWidget.addValueChangeHandler(new ValueChangeHandler<String>() {
@Override
public void onValueChange(ValueChangeEvent<String> event) {
if (event.getValue() == null) {
labelsPanel.remove(labelWidget);
presenter.onRemoveLabel(label);
} else {
presenter.onUpdateLabel(label, event.getValue());
}
}
});
labelsPanel.add(labelWidget);
}
/**
* Updates the UI with the given Component name.
*/
@Override
public void setComponentName(String name) {
componentName.setText(name);
}
@Override
public void setDescription(String description) {
this.description.setText(description == null ? "" : description);
}
/**
* Updates the UI with the given Component ID.
*/
@Override
public void setComponentId(Long id) {
componentId.setText(id.toString());
}
/**
* 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);
}
/**
* Updates the Widget's list of Component Labels.
*/
@Override
public void setComponentLabels(List<AccLabel> labels) {
labelsPanel.clear();
for (AccLabel label : labels) {
displayLabel(label);
}
addBlankLabel();
}
private void addBlankLabel() {
final String newText = "new label";
addLabelWidget = new LabelWidget(newText, true);
addLabelWidget.setLabelSuggestions(labelSuggestions);
addLabelWidget.setVisible(editingEnabled);
addLabelWidget.addValueChangeHandler(new ValueChangeHandler<String>() {
@Override
public void onValueChange(ValueChangeEvent<String> event) {
presenter.onAddLabel(event.getValue());
labelsPanel.remove(addLabelWidget);
addBlankLabel();
}
});
addLabelWidget.setEditable(true);
labelsPanel.add(addLabelWidget);
}
@Override
public void enableEditing() {
editingEnabled = true;
componentGripper.setVisible(true);
componentName.setReadOnly(false);
signoffBox.setEnabled(true);
deleteComponentImage.setVisible(true);
description.setEnabled(true);
for (Widget widget : labelsPanel) {
LabelWidget label = (LabelWidget) widget;
label.setEditable(true);
}
if (addLabelWidget != null) {
addLabelWidget.setVisible(true);
}
}
@Override
public void setSignedOff(boolean signedOff) {
signoffBox.setValue(signedOff);
}
/** Returns the ID of the underlying Component if applicable. Otherwise returns -1. */
public long getComponentId() {
try {
return Long.parseLong(componentId.getText());
} catch (NumberFormatException nfe) {
return -1;
}
}
}