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/*
* Copyright 2000-2022 Vaadin Ltd.
*
* 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.vaadin.v7.client.ui;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.ui.HasEnabled;
import com.google.gwt.user.client.ui.Widget;
import com.vaadin.client.StyleConstants;
/**
* Widget for showing the current progress of a long running task.
* <p>
* The default mode is to show the current progress internally represented by a
* floating point value between 0 and 1 (inclusive). The progress bar can also
* be in an indeterminate mode showing an animation indicating that the task is
* running but without providing any information about the current progress.
*
* @since 7.1
* @author Vaadin Ltd
*/
public class VProgressBar extends Widget implements HasEnabled {
public static final String PRIMARY_STYLE_NAME = "v-progressbar";
Element wrapper = DOM.createDiv();
Element indicator = DOM.createDiv();
private boolean indeterminate = false;
private float state = 0.0f;
private boolean enabled;
public VProgressBar() {
setElement(DOM.createDiv());
getElement().appendChild(wrapper);
wrapper.appendChild(indicator);
setStylePrimaryName(PRIMARY_STYLE_NAME);
}
/*
* (non-Javadoc)
*
* @see
* com.google.gwt.user.client.ui.UIObject#setStylePrimaryName(java.lang.
* String)
*/
@Override
public void setStylePrimaryName(String style) {
super.setStylePrimaryName(style);
indicator.setClassName(getStylePrimaryName() + "-indicator");
wrapper.setClassName(getStylePrimaryName() + "-wrapper");
}
public void setIndeterminate(boolean indeterminate) {
this.indeterminate = indeterminate;
setStyleName(getStylePrimaryName() + "-indeterminate", indeterminate);
}
public void setState(float state) {
final int size = Math.round(100 * state);
indicator.getStyle().setWidth(size, Unit.PCT);
}
public boolean isIndeterminate() {
return indeterminate;
}
public float getState() {
return state;
}
@Override
public boolean isEnabled() {
return enabled;
}
@Override
public void setEnabled(boolean enabled) {
if (this.enabled != enabled) {
this.enabled = enabled;
setStyleName(StyleConstants.DISABLED, !enabled);
}
}
}
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