Revision e4ce2709
Added by Patrick Plitzner over 5 years ago
| eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/descriptiveDataSet/character/CharacterDragListener.java | ||
|---|---|---|
| 9 | 9 |
package eu.etaxonomy.taxeditor.editor.descriptiveDataSet.character; |
| 10 | 10 |
|
| 11 | 11 |
import java.util.Collection; |
| 12 |
import java.util.stream.Collectors; |
|
| 12 | 13 |
|
| 13 | 14 |
import org.eclipse.jface.viewers.IStructuredSelection; |
| 14 | 15 |
import org.eclipse.jface.viewers.TreeSelection; |
| 15 | 16 |
import org.eclipse.jface.viewers.TreeViewer; |
| 17 |
import org.eclipse.nebula.widgets.nattable.util.GUIHelper; |
|
| 16 | 18 |
import org.eclipse.swt.dnd.DragSourceEvent; |
| 19 |
import org.eclipse.swt.graphics.GC; |
|
| 20 |
import org.eclipse.swt.graphics.Image; |
|
| 21 |
import org.eclipse.swt.graphics.Point; |
|
| 22 |
import org.eclipse.swt.widgets.Display; |
|
| 17 | 23 |
|
| 18 | 24 |
import eu.etaxonomy.cdm.model.description.Character; |
| 19 | 25 |
import eu.etaxonomy.cdm.model.description.FeatureNode; |
| ... | ... | |
| 29 | 35 |
|
| 30 | 36 |
private TreeViewer structureViewer; |
| 31 | 37 |
private TreeViewer propertyViewer; |
| 38 |
Collection<Character> characters; |
|
| 39 |
private Image image; |
|
| 40 |
private GC gc; |
|
| 32 | 41 |
|
| 33 | 42 |
public CharacterDragListener(TreeViewer structureViewer, TreeViewer propertyViewer) {
|
| 34 | 43 |
super(propertyViewer); |
| ... | ... | |
| 37 | 46 |
} |
| 38 | 47 |
|
| 39 | 48 |
@Override |
| 40 |
public void dragSetData(DragSourceEvent event) {
|
|
| 41 |
TreeSelection structureSelection = (TreeSelection) structureViewer.getSelection(); |
|
| 42 |
TreeSelection propertySelection = (TreeSelection) propertyViewer.getSelection(); |
|
| 43 |
if(structureSelection!=null && propertySelection!=null |
|
| 44 |
&& !structureSelection.isEmpty() && !propertySelection.isEmpty()){
|
|
| 45 |
//create all possible characters |
|
| 46 |
Collection<Character> characters = CharacterEditor.createCharacters(structureSelection, propertySelection); |
|
| 49 |
public void dragFinished(DragSourceEvent event) {
|
|
| 50 |
characters = null; |
|
| 51 |
if(image!=null){
|
|
| 52 |
image.dispose(); |
|
| 53 |
image = null; |
|
| 54 |
} |
|
| 55 |
if(gc!=null){
|
|
| 56 |
gc.dispose(); |
|
| 57 |
gc = null; |
|
| 58 |
} |
|
| 59 |
super.dragFinished(event); |
|
| 60 |
} |
|
| 47 | 61 |
|
| 48 |
if (CharacterTransfer.getInstance().isSupportedType(event.dataType)) {
|
|
| 49 |
event.data = characters; |
|
| 50 |
} |
|
| 62 |
@Override |
|
| 63 |
public void dragSetData(DragSourceEvent event) {
|
|
| 64 |
if (CharacterTransfer.getInstance().isSupportedType(event.dataType)) {
|
|
| 65 |
event.data = characters; |
|
| 51 | 66 |
} |
| 52 | 67 |
} |
| 53 | 68 |
|
| 54 |
/** |
|
| 55 |
* Method declared on DragSourceListener |
|
| 56 |
*/ |
|
| 57 | 69 |
@Override |
| 58 | 70 |
public void dragStart(DragSourceEvent event) {
|
| 59 | 71 |
event.doit = |
| ... | ... | |
| 63 | 75 |
.stream().allMatch(element -> element instanceof FeatureNode) |
| 64 | 76 |
&& ((IStructuredSelection) propertyViewer.getSelection()).toList() |
| 65 | 77 |
.stream().allMatch(element -> element instanceof FeatureNode); |
| 78 |
if(!event.doit){
|
|
| 79 |
return; |
|
| 80 |
} |
|
| 81 |
TreeSelection structureSelection = (TreeSelection) structureViewer.getSelection(); |
|
| 82 |
TreeSelection propertySelection = (TreeSelection) propertyViewer.getSelection(); |
|
| 83 |
if(structureSelection!=null && propertySelection!=null |
|
| 84 |
&& !structureSelection.isEmpty() && !propertySelection.isEmpty()){
|
|
| 85 |
//create all possible characters |
|
| 86 |
characters = CharacterEditor.createCharacters(structureSelection, propertySelection); |
|
| 87 |
|
|
| 88 |
} |
|
| 89 |
String text = characters.stream().map(character->character.generateTitle()).collect(Collectors.joining("\n"));
|
|
| 90 |
|
|
| 91 |
// creating temporary GC for size calculation |
|
| 92 |
gc = new GC(Display.getDefault()); |
|
| 93 |
// Calculate text extent |
|
| 94 |
Point compositeSize = gc.textExtent(text); |
|
| 95 |
//remove temporary gc |
|
| 96 |
gc.dispose(); |
|
| 97 |
gc = null; |
|
| 98 |
// Creating new Image |
|
| 99 |
image = new Image(Display.getCurrent(),compositeSize.x+10,compositeSize.y+10); |
|
| 100 |
//create gc for image to be able to draw on it |
|
| 101 |
gc = new GC(image); |
|
| 102 |
//set and fill with bg color |
|
| 103 |
gc.setBackground(GUIHelper.COLOR_LIST_BACKGROUND); |
|
| 104 |
gc.fillRectangle(0, 0, compositeSize.x+10, compositeSize.y+10); |
|
| 105 |
//draw text |
|
| 106 |
gc.drawText(text, 5, 5, true); |
|
| 107 |
//draw border |
|
| 108 |
gc.drawRectangle(0, 0, compositeSize.x+9, compositeSize.y+9); |
|
| 109 |
// Setting widget to DnD image |
|
| 110 |
event.image = image; |
|
| 111 |
|
|
| 66 | 112 |
} |
| 67 | 113 |
|
| 68 | 114 |
} |
Also available in: Unified diff
ref #7923 Show character combination during drag&drop