ghidra-master/Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/graph/vertex/FGVertexListingModel.java
/* ###
 * IP: GHIDRA
 *
 * 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 ghidra.app.plugin.core.functiongraph.graph.vertex;

import ghidra.app.util.viewer.format.FormatManager;
import ghidra.app.util.viewer.listingpanel.ProgramBigListingModel;
import ghidra.framework.model.DomainObjectChangedEvent;
import ghidra.program.model.listing.Program;

class FGVertexListingModel extends ProgramBigListingModel {

	private boolean isDirty;

	FGVertexListingModel(Program program, FormatManager formatManager) {
		super(program, formatManager);
	}

	boolean refresh() {
		if (!isDirty) {
			return false;
		}

		isDirty = false;

		if (!program.isClosed()) {
			notifyDataChanged(true);
			return true;
		}
		return false;
	}

	@Override
	public void domainObjectChanged(DomainObjectChangedEvent ev) {
		isDirty = true;
	}
}
