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/*******************************************************************************
* Copyright (c) 2004, 2016 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.intro.impl.model;
import org.eclipse.core.runtime.IConfigurationElement;
import org.osgi.framework.Bundle;
import org.w3c.dom.Element;
/**
* An Intro Config component that has an id attribute and a style-id attribute.
* It also has the notion of filtering. Only model elements that have meaning in
* the UI, and that are targettable can be filtered. HEAD, for example, only
* applied to HTML presentation, and so, it does not need filtering. When model
* is first loaded, all elements are not filtered. When the UI is created, and
* we know which presentation we are using, the filter state is computed
* dynamically. Also, in the SWT presentation, when style manager picks
* elements, it may alter the filter state of a given element to prevent it from
* appearing twice in the ui. eg: title appearing as a title of the form, and as
* a title child text.
*/
public abstract class AbstractBaseIntroElement extends AbstractIntroIdElement {
protected static final String ATT_STYLE_ID = "style-id"; //$NON-NLS-1$
protected static final String ATT_FILTERED_FROM = "filteredFrom"; //$NON-NLS-1$
protected String style_id;
protected String filteredFrom;
private boolean isFiltered;
AbstractBaseIntroElement(IConfigurationElement element) {
super(element);
style_id = element.getAttribute(ATT_STYLE_ID);
filteredFrom = element.getAttribute(ATT_FILTERED_FROM);
}
AbstractBaseIntroElement(Element element, Bundle bundle) {
super(element, bundle);
style_id = getAttribute(element, ATT_STYLE_ID);
filteredFrom = getAttribute(element, ATT_FILTERED_FROM);
}
/**
* Filter this element out based on the presentation kind.
*
*/
private boolean checkFilterState() {
if (this.isOfType(AbstractIntroElement.MODEL_ROOT))
// root element is not filtered.
return false;
IntroModelRoot root = (IntroModelRoot) getParentPage().getParent();
return root.getPresentation().getImplementationKind().equals(
filteredFrom) ? true : false;
}
/**
* @return Returns the class id.
*/
public String getStyleId() {
return style_id;
}
@Override
protected void loadFromParent() {
style_id = getAttribute(getElement(), ATT_STYLE_ID);
filteredFrom = getAttribute(getElement(), ATT_FILTERED_FROM);
}
/**
* @return Returns the filter_kind.
*/
public String getFilteredFrom() {
return filteredFrom;
}
/**
* Return the filter state of this intro element. We need to do this when
* this element has been added to the model, and it has a parent. Also, this
* method will not be valid if the UI has not been loaded yet because it it
* the creation of the UI that determines the presentation details.
*
* @return Returns the isFiltered.
*/
public boolean isFiltered() {
return checkFilterState() || isFiltered;
}
public void setFilterState(boolean state) {
isFiltered = state;
}
}
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