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- package bk;
- import java.lang.reflect.InvocationTargetException;
- import javax.swing.JFrame;
- import javax.swing.JTree;
- import animation.AlgorithmStage;
- import animation.AnimatedAlgorithm;
- import animation.AnimationController;
- import animation.PseudoCodeNode;
- import graph.LayeredGraphNode;
- /**
- * The main stage of the BK node placement algorithm.
- * @author kolja
- *
- */
- public class BKNodePlacement extends AnimatedAlgorithm {
- /*
- * Private data structures to store the process of the algorithm
- */
-
- private enum State
- {
- CONFLICTS,
- LAYOUT1,
- LAYOUT2,
- LAYOUT3,
- LAYOUT4,
- COMBINE
- }
-
- private ConflictDetection conftion;
- private State state;
- private ExtremalLayoutCalc layouts[];
- private Combine combine;
- private PseudoCodeNode conflictsNode;
- private PseudoCodeNode layout1Node;
- private PseudoCodeNode layout2Node;
- private PseudoCodeNode layout3Node;
- private PseudoCodeNode layout4Node;
- private PseudoCodeNode combineNode;
- private boolean inside;
-
- public BKNodePlacement(AnimationController controller, LayeredGraphNode graph, JFrame view) {
- super(controller, graph, view);
- state = State.CONFLICTS;
- conftion = new ConflictDetection( graph );
- layouts = new ExtremalLayoutCalc[ 4 ];
- layouts[ 0 ] = new ExtremalLayoutCalc( ExtremalLayoutCalc.LayoutType.TOP_BOTTOM_LEFT, graph );
- layouts[ 1 ] = new ExtremalLayoutCalc( ExtremalLayoutCalc.LayoutType.TOP_BOTTOM_RIGHT, graph );
- layouts[ 2 ] = new ExtremalLayoutCalc( ExtremalLayoutCalc.LayoutType.BOTTOM_TOP_LEFT, graph );
- layouts[ 3 ] = new ExtremalLayoutCalc( ExtremalLayoutCalc.LayoutType.BOTTOM_TOP_RIGHT, graph );
- combine = new Combine( graph );
- inside = false;
- }
- @Override
- public StageStatus forwardStep() {
- return forward( "forwardStep" );
- }
- @Override
- public StageStatus backwardStep() {
- return backward( "backwardStep" );
- }
-
- @Override
- public PseudoCodeNode createPseudocodeTree( JTree tree )
- {
- PseudoCodeNode root = new PseudoCodeNode( "BK Node Placement Algorithm", tree );
- root.setSelected( true );
- conflictsNode = conftion.createPseudocodeTree( tree );
- layout1Node = layouts[ 0 ].createPseudocodeTree( tree );
- layout2Node = layouts[ 1 ].createPseudocodeTree( tree );
- layout3Node = layouts[ 2 ].createPseudocodeTree( tree );
- layout4Node = layouts[ 3 ].createPseudocodeTree( tree );
- combineNode = combine.createPseudocodeTree( tree );
- root.add( conflictsNode );
- root.add( layout1Node );
- root.add( layout2Node );
- root.add( layout3Node );
- root.add( layout4Node );
- root.add( combineNode );
- return root;
- }
- @Override
- public StageStatus forwardStepOver() {
- if( !inside )
- {
- State oldState = state;
- StageStatus status = StageStatus.UNFINISHED;
- while( state == oldState && status != StageStatus.FINISHED )
- status = forwardStep();
- return status;
- }
- else
- return forward( "forwardStepOver" );
- }
- @Override
- public StageStatus forwardStepOut() {
- if( !inside )
- {
- StageStatus status = StageStatus.UNFINISHED;
- while( status != StageStatus.FINISHED )
- status = forwardStep();
- return status;
- }
- else
- return forward( "forwardStepOut" );
- }
- @Override
- public StageStatus backwardStepOver() {
- if( !inside )
- {
- State oldState = state;
- StageStatus status = StageStatus.UNFINISHED;
- while( state == oldState && status != StageStatus.FINISHED )
- status = backwardStep();
- return status;
- }
- else
- return backward( "backwardStepOver" );
- }
- @Override
- public StageStatus backwardStepOut() {
- if( !inside )
- {
- StageStatus status = StageStatus.UNFINISHED;
- while( status != StageStatus.FINISHED )
- status = backwardStep();
- return status;
- }
- else
- return backward( "backwardStepOut" );
- }
-
- private StageStatus forward( String fName )
- {
- try {
- switch( state )
- {
- case CONFLICTS:
- conflictsNode.setSelected( true );
- if( (StageStatus)(ConflictDetection.class.getMethod( fName ).invoke( conftion ) ) == StageStatus.FINISHED )
- {
- inside = false;
- conflictsNode.setSelected( false );
- layout1Node.setSelected( true );
- state = State.LAYOUT1;
- }
- else
- inside = true;
- break;
- case LAYOUT1:
- if( (StageStatus)(ExtremalLayoutCalc.class.getMethod( fName ).invoke( layouts[ 0 ] ) ) == StageStatus.FINISHED )
- {
- inside = false;
- layout1Node.setSelected( false );
- layout2Node.setSelected( true );
- state = State.LAYOUT2;
- }
- else
- inside = true;
- break;
- case LAYOUT2:
- if( (StageStatus)(ExtremalLayoutCalc.class.getMethod( fName ).invoke( layouts[ 1 ] ) ) == StageStatus.FINISHED )
- {
- inside = false;
- layout2Node.setSelected( false );
- layout3Node.setSelected( true );
- state = State.LAYOUT3;
- }
- else
- inside = true;
- break;
- case LAYOUT3:
- if( (StageStatus)(ExtremalLayoutCalc.class.getMethod( fName ).invoke( layouts[ 2 ] ) ) == StageStatus.FINISHED )
- {
- inside = false;
- layout3Node.setSelected( false );
- layout4Node.setSelected( true );
- state = State.LAYOUT4;
- }
- else
- inside = true;
- break;
- case LAYOUT4:
- if( (StageStatus)(ExtremalLayoutCalc.class.getMethod( fName ).invoke( layouts[ 3 ] ) ) == StageStatus.FINISHED )
- {
- inside = false;
- layout4Node.setSelected( false );
- combineNode.setSelected( true );
- state = State.COMBINE;
- }
- else
- inside = true;
- break;
- case COMBINE:
- if( (StageStatus)(Combine.class.getMethod( fName ).invoke( combine ) ) == StageStatus.FINISHED )
- {
- inside = false;
- return StageStatus.FINISHED;
- }
- else
- inside = true;
- }
- } catch (IllegalAccessException e) {
- e.printStackTrace();
- } catch (IllegalArgumentException e) {
- e.printStackTrace();
- } catch (InvocationTargetException e) {
- e.printStackTrace();
- } catch (NoSuchMethodException e) {
- e.printStackTrace();
- } catch (SecurityException e) {
- e.printStackTrace();
- }
- return StageStatus.UNFINISHED;
- }
- private StageStatus backward( String fName ) {
- try {
- switch( state )
- {
- case CONFLICTS:
- if( (StageStatus)(ConflictDetection.class.getMethod( fName ).invoke( conftion ) ) == StageStatus.FINISHED )
- {
- inside = false;
- return StageStatus.FINISHED;
- }
- else
- inside = true;
- case LAYOUT1:
- if( (StageStatus)(ExtremalLayoutCalc.class.getMethod( fName ).invoke( layouts[ 0 ] ) ) == StageStatus.FINISHED )
- {
- inside = false;
- layout1Node.setSelected( false );
- conflictsNode.setSelected( true );
- state = State.CONFLICTS;
- }
- else
- inside = true;
- break;
- case LAYOUT2:
- if( (StageStatus)(ExtremalLayoutCalc.class.getMethod( fName ).invoke( layouts[ 1 ] ) ) == AlgorithmStage.StageStatus.FINISHED )
- {
- inside = false;
- layout2Node.setSelected( false );
- layout1Node.setSelected( true );
- state = State.LAYOUT1;
- }
- else
- inside = true;
- break;
- case LAYOUT3:
- if( (StageStatus)(ExtremalLayoutCalc.class.getMethod( fName ).invoke( layouts[ 2 ] ) ) == AlgorithmStage.StageStatus.FINISHED )
- {
- inside = false;
- layout3Node.setSelected( false );
- layout2Node.setSelected( true );
- state = State.LAYOUT2;
- }
- else
- inside = true;
- break;
- case LAYOUT4:
- if( (StageStatus)(ExtremalLayoutCalc.class.getMethod( fName ).invoke( layouts[ 3 ] ) ) == AlgorithmStage.StageStatus.FINISHED )
- {
- inside = false;
- layout4Node.setSelected( false );
- layout3Node.setSelected( true );
- state = State.LAYOUT3;
- }
- else
- inside = true;
- break;
- case COMBINE:
- if( (StageStatus)(Combine.class.getMethod( fName ).invoke( combine ) ) == AlgorithmStage.StageStatus.FINISHED )
- {
- inside = false;
- combineNode.setSelected( false );
- layout4Node.setSelected( true );
- state = State.LAYOUT4;
- }
- else
- inside = true;
- break;
- }
- } catch (IllegalAccessException e) {
- e.printStackTrace();
- } catch (IllegalArgumentException e) {
- e.printStackTrace();
- } catch (InvocationTargetException e) {
- e.printStackTrace();
- } catch (NoSuchMethodException e) {
- e.printStackTrace();
- } catch (SecurityException e) {
- e.printStackTrace();
- }
- return StageStatus.UNFINISHED;
- }
-
- }
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