com.gwtm.ui.client.widgets.TextArea.java Source code

Introduction

Here is the source code for com.gwtm.ui.client.widgets.TextArea.java

Source

/*
 * Copyright (c) 2011 Zhihua (Dennis) Jiang
 * 
 * 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.gwtm.ui.client.widgets;

import com.google.gwt.dom.client.Style.Unit;
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.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.user.client.Element;
import com.gwtm.ui.client.core.Utils;

public class TextArea extends com.google.gwt.user.client.ui.TextArea
        implements FocusHandler, BlurHandler, KeyUpHandler {

    TextArea() {
        setStyleName("gwtm-TextArea");
        addFocusHandler(this);
        addBlurHandler(this);
        addKeyUpHandler(this);
    }

    @Override
    public void onFocus(FocusEvent event) {
        this.addStyleName("Focus");
    }

    @Override
    public void onBlur(BlurEvent event) {
        this.removeStyleName("Focus");
    }

    @Override
    public void onKeyUp(KeyUpEvent event) {
        Element ele = getElement();
        final int extraLineHeight = 15;
        int scrollHeight = ele.getScrollHeight();
        int clientHeight = ele.getClientHeight();
        Utils.Console(scrollHeight + " " + clientHeight);
        if (clientHeight < scrollHeight) {
            ele.getStyle().setHeight(scrollHeight + extraLineHeight, Unit.PX);
        }
    }

}