/*
* Copyright 2012 GWT-Bootstrap
*
* 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.github.gwtbootstrap.client.ui;
import java.util.List;
import com.github.gwtbootstrap.client.ui.base.HasAlternateSize;
import com.github.gwtbootstrap.client.ui.base.HasId;
import com.github.gwtbootstrap.client.ui.base.HasSize;
import com.github.gwtbootstrap.client.ui.base.HasStyle;
import com.github.gwtbootstrap.client.ui.base.IsResponsive;
import com.github.gwtbootstrap.client.ui.base.IsSearchQuery;
import com.github.gwtbootstrap.client.ui.base.ResponsiveHelper;
import com.github.gwtbootstrap.client.ui.base.SearchQueryStyleHelper;
import com.github.gwtbootstrap.client.ui.base.SizeHelper;
import com.github.gwtbootstrap.client.ui.base.Style;
import com.github.gwtbootstrap.client.ui.base.StyleHelper;
import com.github.gwtbootstrap.client.ui.constants.AlternateSize;
import com.github.gwtbootstrap.client.ui.constants.Constants;
import com.github.gwtbootstrap.client.ui.constants.ControlGroupType;
import com.github.gwtbootstrap.client.ui.constants.Device;
import com.google.gwt.dom.client.Element;
import com.google.gwt.editor.client.EditorError;
import com.google.gwt.editor.client.HasEditorErrors;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.user.client.ui.Widget;
/**
* A ListBox for Bootstrap form.
*
* @since 2.0.4.0
*
* @author ohashi keisuke
*
*/
public class ListBox extends com.google.gwt.user.client.ui.ListBox implements HasSize, HasAlternateSize, IsSearchQuery, HasId , IsResponsive , HasStyle, HasEditorErrors<String>{
/** Widget for control decoration on <code>EditorError</code>s */
private Widget controlGroup;// could be a ControlGroup widget
/** Widget where <code>EditorError</code>s messages will be placed */
private Widget errorLabel;// could be a HelpInline widget
{
setStyleName("");
}
/**
* Creates an empty list box in single selection mode.
*/
public ListBox() {
super();
}
/**
* Creates an empty list box. The preferred way to enable multiple
* selections is to use this constructor rather than
* {@link #setMultipleSelect(boolean)}.
*
* @param isMultipleSelect
* specifies if multiple selection is enabled
*/
public ListBox(boolean isMultipleSelect) {
super(isMultipleSelect);
}
/**
* This constructor may be used by subclasses to explicitly use an existing
* element. This element must be a <select> element.
*
* @param element
* the element to be used
*/
protected ListBox(Element element) {
super(element);
}
/**
* {@inheritDoc}
*/
@Override
public void setAlternateSize(AlternateSize size) {
StyleHelper.changeStyle(this, size, AlternateSize.class);
}
/**
* {@inheritDoc}
*/
@Override
public void setSize(int size) {
SizeHelper.setSize(this, size);
}
/**
* Get Selected Value.
* <p>
* If set multiple,return first selected value.
* @return Selected Value.(If there is nothing selected item,return null)
*/
public String getValue() {
if(getSelectedIndex() == -1) {
return null;
}
return getValue(getSelectedIndex());
}
/**
* {@inheritDoc}
*/
@Override
public void setSearchQuery(boolean searchQuery) {
SearchQueryStyleHelper.setSearchQuery(this, searchQuery);
}
/**
* {@inheritDoc}
*/
@Override
public boolean isSearchQuery() {
return SearchQueryStyleHelper.isSearchQuery(this);
}
/**
* {@inheritDoc}
*/
@Override
public String getId() {
return getElement().getId();
}
/**
* {@inheritDoc}
*/
@Override
public void setId(String id) {
getElement().setId(id);
}
/**
* {@inheritDoc}
*/
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
if(enabled) {
removeStyleName(Constants.DISABLED);
} else {
addStyleName(Constants.DISABLED);
}
}
/**
* Selects item which has the given value. If value
* is not found, nothing is done.
* @param value to be selected (<code>null</code>-safe)
*/
public void setSelectedValue(String value) {
if (value == null) {
value = "";
}
for(int i = 0; i < getItemCount(); i++) {
if (getValue(i).equals(value)) {
setSelectedIndex(i);
return;
}
}
}
/**
* {@inheritDoc}
*/
@Override
public void setShowOn(Device device) {
ResponsiveHelper.setShowOn(this, device);
}
/**
* {@inheritDoc}
*/
@Override
public void setHideOn(Device device) {
ResponsiveHelper.setHideOn(this, device);
}
/**
* {@inheritDoc}
*/
@Override
public void setStyle(Style style) {
StyleHelper.setStyle(this, style);
}
/**
* {@inheritDoc}
*/
@Override
public void addStyle(Style style) {
StyleHelper.addStyle(this, style);
}
/**
* {@inheritDoc}
*/
@Override
public void removeStyle(Style style) {
StyleHelper.removeStyle(this, style);
}
/**
*
* @see com.google.gwt.editor.client.HasEditorErrors#showErrors(java.util.List)
*/
@Override
public void showErrors(List<EditorError> errors) {
Widget decoratedWidget = controlGroup != null? controlGroup : this;
if(errors != null && !errors.isEmpty()) {
StyleHelper.addStyle(decoratedWidget, ControlGroupType.ERROR);
SafeHtmlBuilder sb = new SafeHtmlBuilder();
for (EditorError error : errors) {
if(error.getEditor() == this) {
error.setConsumed(true);
sb.appendEscaped(error.getMessage());
sb.appendHtmlConstant("<br />");
}
}
setErrorLabelText(sb.toSafeHtml().asString());
} else {
StyleHelper.removeStyle(decoratedWidget, ControlGroupType.ERROR);
setErrorLabelText("");
}
}
/**
* The widget that will be decorated on <code>EditorError</code>s will be added de <code>ControlGroupType.ERROR</code> style.
* It can be a ControlGroup or any widget.
* @param controlGroup
*/
public void setControlGroup(Widget controlGroup) {
this.controlGroup = controlGroup;
}
/**
* Widget where <code>EditorError</code>s messages will be placed.
* It can be a HelpBlock or any other widget.
* @param errorLabel
*/
public void setErrorLabel(Widget errorLabel) {
this.errorLabel = errorLabel;
}
/**
* Sets the content of the <code>EditorError</code>s messages inside de <code>errorLabel</code>.
* This implementation uses {@link Element#setInnerHTML(String)} to set the content.
* @param errorMessage
*/
protected void setErrorLabelText(String errorMessage) {
if(errorLabel != null) {
errorLabel.getElement().setInnerHTML(errorMessage);
}
}
}