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GWT Bibliothek fuer Mobile Plattformen der SWM
/*
* Copyright 2011 SWM Services GmbH.
*
* 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 de.swm.commons.mobile.client.base;
import com.google.gwt.dom.client.InputElement;
import com.google.gwt.event.dom.client.BlurEvent;
import com.google.gwt.event.dom.client.BlurHandler;
import com.google.gwt.event.dom.client.FocusEvent;
import com.google.gwt.event.dom.client.FocusHandler;
import com.google.gwt.i18n.client.LocaleInfo;
import com.google.gwt.text.shared.Parser;
import com.google.gwt.text.shared.Renderer;
import com.google.gwt.user.client.ui.ValueBox;
import com.google.gwt.user.client.ui.ValueBoxBase;
import de.swm.commons.mobile.client.SWMMobile;
import de.swm.commons.mobile.client.utils.IsSWMMobileWidgetHelper;
import de.swm.commons.mobile.client.validation.IErrorOutputElement;
import de.swm.commons.mobile.client.validation.IValidator;
import de.swm.commons.mobile.client.validation.impl.ValidationHelper;
import de.swm.commons.mobile.client.widgets.itf.IsSWMMobileWidget;
import java.io.IOException;
/**
* Creates an HTML5 Element and uses the right GWT renderer and parser to support data binding. Has to inherit from
* {@link ValueBoxBase} gwt's {@link ValueBox} has an assertion to insert only text content (not valid using e.g.
* numbers).
*
* @param
* the value type
*
*
*
* @param
*/
public class BoxBase extends com.google.gwt.user.client.ui.ValueBoxBase implements FocusHandler, BlurHandler,
IsSWMMobileWidget {
private final IsSWMMobileWidgetHelper myWidgetHelper = new IsSWMMobileWidgetHelper();
private final ValidationHelper validationHelper = new ValidationHelper();
public static class ToStringRenderer implements Renderer{
@Override
public String render(Object obj) {
if(obj == null){
return "";
}
return obj.toString();
}
@Override
public void render(Object obj, Appendable app) throws IOException {
app.append(render(obj));
}
}
/**
* Default constructor.
*
* @param html5Type
* the html5 element type
* @param renderer
* the renderer
* @param parser
* the parser
*/
public BoxBase(String html5Type, Renderer renderer, Parser parser) {
super(createNumberInputElement(html5Type), renderer, parser);
// BiDi input is not expected - disable direction estimation.
setDirectionEstimator(false);
if (LocaleInfo.getCurrentLocale().isRTL()) {
setDirection(Direction.LTR);
}
setStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTextBoxCss().textBox());
addFocusHandler(this);
addBlurHandler(this);
}
/**
* Adds a validator to this Ui-Widget
*
* @param validatorToAdd
* the validtors to add
*/
public void addValidator(IValidator validatorToAdd) {
this.validationHelper.addValidator(validatorToAdd);
}
/**
* Add an error output element where error messages are displayed
*
* @param errorOutputToAdd
* the error output element to add
*/
public void addErrorOuptut(IErrorOutputElement errorOutputToAdd) {
this.validationHelper.addErrorOuptut(errorOutputToAdd);
}
/**
* Will remove all registered validators.
*/
public void removeAllValidators() {
this.validationHelper.removeAllValidators();
}
@Override
protected void onLoad() {
super.onLoad();
myWidgetHelper.checkInitialLoad(this);
}
@Override
public void onFocus(FocusEvent event) {
this.addStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTextBoxCss().focus());
}
@Override
public void onBlur(BlurEvent event) {
this.removeStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTextBoxCss().focus());
this.validationHelper.validate(this);
}
/**
* Creates the right HTML input element.
*
* @param type
* the type
* @return the input element.
*/
protected static native InputElement createNumberInputElement(String type) /*-{
var e = $doc.createElement("INPUT");
e.type = type;
if (type === "number") {
e.type = "tel";
e.pattern = "[0-9]";
e.onkeypress = function isNumber(evt) {
evt = (evt) ? evt : window.event;
var charCode = (evt.which) ? evt.which : evt.keyCode;
return (charCode >= 48 && charCode <= 57) || charCode == 44 || charCode == 45;
};
}
return e;
}-*/;
/**
* Will capitalize the first letter.
*
* @param input
* the input
* @return the complete string containing the capitalized first letter
*/
private String capitalize(String input) {
return input.substring(0, 1).toUpperCase() + input.substring(1).toLowerCase();
}
@Override
public void onInitialLoad() {
}
@Override
public void onTransitionEnd() {
}
@Override
public void setSecondaryStyle(String style) {
myWidgetHelper.setSecondaryStyle(this, style);
}
/**
* Gets the maximum allowable length.
*
* @return the maximum length, in characters
*/
public int getMaxLength() {
return getInputElement().getMaxLength();
}
/**
* Gets the number of visible characters.
*
* @return the number of visible characters
*/
public int getVisibleLength() {
return getInputElement().getSize();
}
/**
* Sets the maximum allowable length.
*
* @param length
* the maximum length, in characters
*/
public void setMaxLength(int length) {
getInputElement().setMaxLength(length);
}
/**
* Sets the number of visible characters.
*
* @param length
* the number of visible characters
*/
public void setVisibleLength(int length) {
getInputElement().setSize(length);
}
private InputElement getInputElement() {
return getElement().cast();
}
}