| FlowchartView.java |
1 /****************************************************************************
2 * This demo file is part of yFiles for Java 2.14.
3 * Copyright (c) 2000-2017 by yWorks GmbH, Vor dem Kreuzberg 28,
4 * 72070 Tuebingen, Germany. All rights reserved.
5 *
6 * yFiles demo files exhibit yFiles for Java functionalities. Any redistribution
7 * of demo files in source code or binary form, with or without
8 * modification, is not permitted.
9 *
10 * Owners of a valid software license for a yFiles for Java version that this
11 * demo is shipped with are allowed to use the demo source code as basis
12 * for their own yFiles for Java powered applications. Use of such programs is
13 * governed by the rights and conditions as set out in the yFiles for Java
14 * license agreement.
15 *
16 * THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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19 * NO EVENT SHALL yWorks BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
21 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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26 *
27 ***************************************************************************/
28 package demo.view.flowchart;
29
30 import y.base.Edge;
31 import y.view.Graph2DView;
32 import y.view.Graph2DViewMouseWheelZoomListener;
33 import y.view.PopupMode;
34 import y.view.CreateEdgeMode;
35 import y.view.EditMode;
36 import y.view.Graph2DViewActions;
37 import y.view.AutoDragViewMode;
38 import y.view.MovePortMode;
39 import y.base.Node;
40 import y.view.TooltipMode;
41
42 import javax.swing.JPopupMenu;
43 import javax.swing.JMenuItem;
44
45 /**
46 * Component that visualizes Flowchart diagrams.
47 */
48 public class FlowchartView extends Graph2DView {
49 private Graph2DViewActions flowchartActions;
50
51 /**
52 * Creates a new Graph2DView containing an empty graph and register Flowchart specific view modes and actions
53 * The constructor calls the following methods, in oder to register respective view modes and actions:
54 * <ul>
55 * <li> {@link #registerViewModes()}</li>
56 * <li> {@link #registerViewActions()} </li>
57 * <li> {@link #registerViewListeners()}</li>
58 * </ul>
59 */
60 public FlowchartView() {
61 super();
62 //Some default behaviour
63 this.setFitContentOnResize(true);
64
65 //init
66 registerViewModes();
67 registerViewActions();
68 registerViewListeners();
69 }
70
71 /**
72 * Callback method, which registers Flowchart specific view actions.
73 */
74 protected void registerViewActions() {
75 flowchartActions = new Graph2DViewActions(this);
76 flowchartActions.install();
77 }
78
79 /**
80 * Callback method, which registers Flowchart specific view modes and configures them.
81 */
82 protected void registerViewModes() {
83 EditMode editMode = new EditMode();
84 // Route all edges orthogonally.
85 editMode.setOrthogonalEdgeRouting(true);
86
87 CreateEdgeMode createEdgeMode = (CreateEdgeMode) editMode.getCreateEdgeMode();
88 createEdgeMode.setOrthogonalEdgeCreation(true);
89 createEdgeMode.setIndicatingTargetNode(true);
90 editMode.setSnappingEnabled(true);
91
92 //add hierarchy actions to the views popup menu
93 editMode.setPopupMode(new FlowchartPopupMode());
94 editMode.getMouseInputMode().setNodeSearchingEnabled(true);
95 editMode.assignNodeLabel(false);
96
97 ((MovePortMode) editMode.getMovePortMode()).setIndicatingTargetNode(true);
98
99 //add view mode to display tooltips for node
100 TooltipMode tooltipMode = new TooltipMode();
101 tooltipMode.setEdgeTipEnabled(false);
102 addViewMode(tooltipMode);
103
104 //allow moving view port with right drag gesture
105 editMode.allowMovingWithPopup(true);
106 addViewMode(editMode);
107
108 //Auto drag mode
109 addViewMode(new AutoDragViewMode());
110 }
111
112 /**
113 * Callback method, which registers specific listeners and configures them.
114 */
115 protected void registerViewListeners() {
116 Graph2DViewMouseWheelZoomListener wheelZoomListener = new Graph2DViewMouseWheelZoomListener();
117 //zoom in/out at mouse pointer location
118 wheelZoomListener.setCenterZooming(false);
119 wheelZoomListener.addToCanvas(this);
120 }
121
122
123 //////////////////////////////////////////////////////////////////////////////
124 // VIEW MODES ////////////////////////////////////////////////////////////////
125 //////////////////////////////////////////////////////////////////////////////
126
127 /**
128 * provides the context sensitive popup menus
129 */
130 private class FlowchartPopupMode extends PopupMode {
131
132 public JPopupMenu getNodePopup(Node v) {
133 JPopupMenu pm = new JPopupMenu();
134 if (v != null) {
135 JMenuItem deleteItem = pm.add(flowchartActions.getDeleteSelectionAction());
136 deleteItem.setText("Delete Node");
137 }
138 return pm;
139 }
140
141 public JPopupMenu getEdgePopup(Edge e) {
142 JPopupMenu pm = new JPopupMenu();
143 if (e != null) {
144 JMenuItem deleteItem = pm.add(flowchartActions.getDeleteSelectionAction());
145 deleteItem.setText("Delete Edge");
146 }
147 return pm;
148 }
149
150 public JPopupMenu getSelectionPopup(double x, double y) {
151 JPopupMenu pm = new JPopupMenu();
152 JMenuItem deleteItem = pm.add(flowchartActions.getDeleteSelectionAction());
153 deleteItem.setText("Delete Selection");
154 return pm;
155 }
156 }
157 }
158