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1 | sclass JFileDropTarget extends MetaWithChangeListeners is Swingable {
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2 | settable S msg = "Drop file here or click the button"; |
3 | |
4 | // currently dropped file |
5 | settableWithVar File file; |
6 | |
7 | settable File defaultDirectory; |
8 | |
9 | // file can also be null |
10 | event fileSelected(File file); |
11 | |
12 | SingleComponentPanel scp = scp(); |
13 | |
14 | *() {
|
15 | varFile().onChange(file -> {
|
16 | updateComponent(); |
17 | fileSelected(file); |
18 | }); |
19 | } |
20 | |
21 | cachedVisualize {
|
22 | if (!scp.hasComponent()) |
23 | scp.setComponent(makeComponent()); |
24 | ret jHandleFileDrop((IVF1<File>) l1 setFile, scp); |
25 | } |
26 | |
27 | void updateComponent {
|
28 | scp.setComponent(makeComponent()); |
29 | } |
30 | |
31 | JComponent makeComponent() {
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32 | var file = file(); |
33 | ret file == null |
34 | ? noFileComponent() |
35 | : componentForFile(file); |
36 | } |
37 | |
38 | // What to show before a file was selected/dropped |
39 | JComponent noFileComponent() {
|
40 | ret withBorder(BorderFactory.createDashedBorder(Color.gray, 2, 5, 5, true), |
41 | jfullcenter(vstackWithSpacing( |
42 | jcenteredlabel(msg), |
43 | jThreadedButton("Open file...", l0 openDialog)
|
44 | ))); |
45 | } |
46 | |
47 | swappable JComponent componentForFile(File file) {
|
48 | ret jfullcenter(jFilePathLabel(file).visualize()); |
49 | } |
50 | |
51 | void setComponent(JComponent component) {
|
52 | scp.setComponent(component); |
53 | } |
54 | |
55 | void openDialog {
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56 | new JFileChooser fc; |
57 | fc.setDialogTitle("Open file");
|
58 | fc.setCurrentDirectory(or(defaultDirectory(), userDir())); |
59 | if (fc.showOpenDialog(scp) == JFileChooser.APPROVE_OPTION) |
60 | setFile(fc.getSelectedFile()); |
61 | } |
62 | } |
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| Snippet ID: | #1035146 |
| Snippet name: | JFileDropTarget |
| Eternal ID of this version: | #1035146/11 |
| Text MD5: | 7bb34338122681235926aaa31834d643 |
| Transpilation MD5: | acfb29376523b37dbf70dd52b4f00922 |
| Author: | stefan |
| Category: | javax / gui |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2022-04-28 15:34:51 |
| Source code size: | 1611 bytes / 62 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 199 / 350 |
| Version history: | 10 change(s) |
| Referenced in: | [show references] |