29
30 import javafx.scene.input.TransferMode;
31
32 import com.sun.glass.ui.ClipboardAssistance;
33 import com.sun.glass.ui.View;
34 import com.sun.glass.ui.Window;
35
36 import java.security.AccessController;
37 import java.security.PrivilegedAction;
38
39 class GlassSceneDnDEventHandler {
40
41 private final GlassScene scene;
42
43 public GlassSceneDnDEventHandler(final GlassScene scene) {
44 this.scene = scene;
45 }
46
47 // Drop target handlers
48
49 private double getPlatformScale() {
50 View view = scene.getPlatformView();
51 if (view != null) {
52 Window w = view.getWindow();
53 if (w != null) {
54 return w.getPlatformScale();
55 }
56 }
57 return 1.0;
58 }
59
60 public TransferMode handleDragEnter(final int x, final int y, final int xAbs, final int yAbs,
61 final TransferMode recommendedTransferMode,
62 final ClipboardAssistance dropTargetAssistant)
63 {
64 assert Platform.isFxApplicationThread();
65 return AccessController.doPrivileged((PrivilegedAction<TransferMode>) () -> {
66 if (scene.dropTargetListener != null) {
67 double pScale = getPlatformScale();
68 QuantumClipboard dragboard =
69 QuantumClipboard.getDragboardInstance(dropTargetAssistant, false);
70 return scene.dropTargetListener.dragEnter(x / pScale, y / pScale, xAbs / pScale, yAbs / pScale,
71 recommendedTransferMode, dragboard);
72 }
73 return null;
74 }, scene.getAccessControlContext());
75 }
76
77 public void handleDragLeave(final ClipboardAssistance dropTargetAssistant) {
78 assert Platform.isFxApplicationThread();
79 AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
80 if (scene.dropTargetListener != null) {
81 scene.dropTargetListener.dragExit(0, 0, 0, 0);
82 }
83 return null;
84 }, scene.getAccessControlContext());
85 }
86
87 public TransferMode handleDragDrop(final int x, final int y, final int xAbs, final int yAbs,
88 final TransferMode recommendedTransferMode,
89 final ClipboardAssistance dropTargetAssistant)
90 {
91 assert Platform.isFxApplicationThread();
92 return AccessController.doPrivileged((PrivilegedAction<TransferMode>) () -> {
93 if (scene.dropTargetListener != null) {
94 double pScale = getPlatformScale();
95 return scene.dropTargetListener.drop(x / pScale, y / pScale, xAbs / pScale, yAbs / pScale,
96 recommendedTransferMode);
97 }
98 return null;
99 }, scene.getAccessControlContext());
100 }
101
102 public TransferMode handleDragOver(final int x, final int y, final int xAbs, final int yAbs,
103 final TransferMode recommendedTransferMode,
104 final ClipboardAssistance dropTargetAssistant)
105 {
106 assert Platform.isFxApplicationThread();
107 return AccessController.doPrivileged((PrivilegedAction<TransferMode>) () -> {
108 if (scene.dropTargetListener != null) {
109 double pScale = getPlatformScale();
110 return scene.dropTargetListener.dragOver(x / pScale, y / pScale, xAbs / pScale, yAbs / pScale,
111 recommendedTransferMode);
112 }
113 return null;
114 }, scene.getAccessControlContext());
115 }
116
117 // Drag source handlers
118
119 // This is a callback from the native platform, when a drag gesture is
120 // detected. This mechanism is currently not used in FX, as we have
121 // a custom gesture recognizer in Scene, and DnD is started with
122 // Toolkit.startDrag().
123 public void handleDragStart(final int button, final int x, final int y, final int xAbs, final int yAbs,
124 final ClipboardAssistance dragSourceAssistant)
125 {
126 assert Platform.isFxApplicationThread();
127 AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
128 if (scene.dragGestureListener != null) {
129 double pScale = getPlatformScale();
130 QuantumClipboard dragboard =
131 QuantumClipboard.getDragboardInstance(dragSourceAssistant, true);
132 scene.dragGestureListener.dragGestureRecognized(
133 x / pScale, y / pScale, xAbs / pScale, yAbs / pScale, button, dragboard);
134 }
135 return null;
136 }, scene.getAccessControlContext());
137 }
138
139 // This is a callback from the native platform, when the drag was started
140 // from handleDragStart() above, or when FX as a drag source is embedded
141 // to Swing/SWT.
142 public void handleDragEnd(final TransferMode performedTransferMode,
143 final ClipboardAssistance dragSourceAssistant)
144 {
145 assert Platform.isFxApplicationThread();
146 AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
147 try {
148 if (scene.dragSourceListener != null) {
149 scene.dragSourceListener.dragDropEnd(0, 0, 0, 0, performedTransferMode);
150 }
151 } finally {
152 QuantumClipboard.releaseCurrentDragboard();
153 }
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29
30 import javafx.scene.input.TransferMode;
31
32 import com.sun.glass.ui.ClipboardAssistance;
33 import com.sun.glass.ui.View;
34 import com.sun.glass.ui.Window;
35
36 import java.security.AccessController;
37 import java.security.PrivilegedAction;
38
39 class GlassSceneDnDEventHandler {
40
41 private final GlassScene scene;
42
43 public GlassSceneDnDEventHandler(final GlassScene scene) {
44 this.scene = scene;
45 }
46
47 // Drop target handlers
48
49 private double getPlatformScaleX() {
50 View view = scene.getPlatformView();
51 if (view != null) {
52 Window w = view.getWindow();
53 if (w != null) {
54 return w.getPlatformScaleX();
55 }
56 }
57 return 1.0;
58 }
59
60 private double getPlatformScaleY() {
61 View view = scene.getPlatformView();
62 if (view != null) {
63 Window w = view.getWindow();
64 if (w != null) {
65 return w.getPlatformScaleY();
66 }
67 }
68 return 1.0;
69 }
70
71 public TransferMode handleDragEnter(final int x, final int y, final int xAbs, final int yAbs,
72 final TransferMode recommendedTransferMode,
73 final ClipboardAssistance dropTargetAssistant)
74 {
75 assert Platform.isFxApplicationThread();
76 return AccessController.doPrivileged((PrivilegedAction<TransferMode>) () -> {
77 if (scene.dropTargetListener != null) {
78 double pScaleX = getPlatformScaleX();
79 double pScaleY = getPlatformScaleY();
80 QuantumClipboard dragboard =
81 QuantumClipboard.getDragboardInstance(dropTargetAssistant, false);
82 return scene.dropTargetListener.dragEnter(x / pScaleX, y / pScaleY, xAbs / pScaleX, yAbs / pScaleY,
83 recommendedTransferMode, dragboard);
84 }
85 return null;
86 }, scene.getAccessControlContext());
87 }
88
89 public void handleDragLeave(final ClipboardAssistance dropTargetAssistant) {
90 assert Platform.isFxApplicationThread();
91 AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
92 if (scene.dropTargetListener != null) {
93 scene.dropTargetListener.dragExit(0, 0, 0, 0);
94 }
95 return null;
96 }, scene.getAccessControlContext());
97 }
98
99 public TransferMode handleDragDrop(final int x, final int y, final int xAbs, final int yAbs,
100 final TransferMode recommendedTransferMode,
101 final ClipboardAssistance dropTargetAssistant)
102 {
103 assert Platform.isFxApplicationThread();
104 return AccessController.doPrivileged((PrivilegedAction<TransferMode>) () -> {
105 if (scene.dropTargetListener != null) {
106 double pScaleX = getPlatformScaleX();
107 double pScaleY = getPlatformScaleY();
108 return scene.dropTargetListener.drop(x / pScaleX, y / pScaleY, xAbs / pScaleX, yAbs / pScaleY,
109 recommendedTransferMode);
110 }
111 return null;
112 }, scene.getAccessControlContext());
113 }
114
115 public TransferMode handleDragOver(final int x, final int y, final int xAbs, final int yAbs,
116 final TransferMode recommendedTransferMode,
117 final ClipboardAssistance dropTargetAssistant)
118 {
119 assert Platform.isFxApplicationThread();
120 return AccessController.doPrivileged((PrivilegedAction<TransferMode>) () -> {
121 if (scene.dropTargetListener != null) {
122 double pScaleX = getPlatformScaleX();
123 double pScaleY = getPlatformScaleY();
124 return scene.dropTargetListener.dragOver(x / pScaleX, y / pScaleY, xAbs / pScaleX, yAbs / pScaleY,
125 recommendedTransferMode);
126 }
127 return null;
128 }, scene.getAccessControlContext());
129 }
130
131 // Drag source handlers
132
133 // This is a callback from the native platform, when a drag gesture is
134 // detected. This mechanism is currently not used in FX, as we have
135 // a custom gesture recognizer in Scene, and DnD is started with
136 // Toolkit.startDrag().
137 public void handleDragStart(final int button, final int x, final int y, final int xAbs, final int yAbs,
138 final ClipboardAssistance dragSourceAssistant)
139 {
140 assert Platform.isFxApplicationThread();
141 AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
142 if (scene.dragGestureListener != null) {
143 double pScaleX = getPlatformScaleX();
144 double pScaleY = getPlatformScaleY();
145 QuantumClipboard dragboard =
146 QuantumClipboard.getDragboardInstance(dragSourceAssistant, true);
147 scene.dragGestureListener.dragGestureRecognized(
148 x / pScaleX, y / pScaleY, xAbs / pScaleX, yAbs / pScaleY, button, dragboard);
149 }
150 return null;
151 }, scene.getAccessControlContext());
152 }
153
154 // This is a callback from the native platform, when the drag was started
155 // from handleDragStart() above, or when FX as a drag source is embedded
156 // to Swing/SWT.
157 public void handleDragEnd(final TransferMode performedTransferMode,
158 final ClipboardAssistance dragSourceAssistant)
159 {
160 assert Platform.isFxApplicationThread();
161 AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
162 try {
163 if (scene.dragSourceListener != null) {
164 scene.dragSourceListener.dragDropEnd(0, 0, 0, 0, performedTransferMode);
165 }
166 } finally {
167 QuantumClipboard.releaseCurrentDragboard();
168 }
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