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体验新版 GitCode,发现更多精彩内容 >>
提交
b3da545c
编写于
10月 01, 2019
作者:
M
Matt Bierner
浏览文件
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浏览文件
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电子邮件补丁
差异文件
Use enum to track preview state to avoid getting into invalid states such as active & disposed
上级
6493b8dc
变更
1
显示空白变更内容
内联
并排
Showing
1 changed file
with
18 addition
and
13 deletion
+18
-13
extensions/image-preview/src/preview.ts
extensions/image-preview/src/preview.ts
+18
-13
未找到文件。
extensions/image-preview/src/preview.ts
浏览文件 @
b3da545c
...
...
@@ -8,12 +8,17 @@ import { SizeStatusBarEntry } from './sizeStatusBarEntry';
import
{
ZoomStatusBarEntry
}
from
'
./zoomStatusBarEntry
'
;
import
{
Disposable
}
from
'
./dispose
'
;
const
enum
PreviewState
{
Disposed
,
Visible
,
Active
,
}
export
class
Preview
extends
Disposable
{
public
static
readonly
viewType
=
'
imagePreview.previewEditor
'
;
private
_active
=
true
;
private
_isWebviewDispose
=
false
;
private
_previewState
=
PreviewState
.
Visible
;
constructor
(
private
readonly
extensionRoot
:
vscode
.
Uri
,
...
...
@@ -35,10 +40,6 @@ export class Preview extends Disposable {
]
};
this
.
_register
(
webviewEditor
.
onDidDispose
(()
=>
{
this
.
_isWebviewDispose
=
true
;
}));
this
.
_register
(
webviewEditor
.
webview
.
onDidReceiveMessage
(
message
=>
{
switch
(
message
.
type
)
{
case
'
size
'
:
...
...
@@ -55,7 +56,7 @@ export class Preview extends Disposable {
}));
this
.
_register
(
zoomStatusBarEntry
.
onDidChangeScale
(
e
=>
{
if
(
this
.
_
active
&&
!
this
.
_isWebviewDispos
e
)
{
if
(
this
.
_
previewState
===
PreviewState
.
Activ
e
)
{
this
.
webviewEditor
.
webview
.
postMessage
({
type
:
'
setScale
'
,
scale
:
e
.
scale
});
}
}));
...
...
@@ -65,12 +66,11 @@ export class Preview extends Disposable {
}));
this
.
_register
(
webviewEditor
.
onDidDispose
(()
=>
{
this
.
_isWebviewDispose
=
true
;
this
.
_active
=
false
;
if
(
this
.
_active
)
{
if
(
this
.
_previewState
===
PreviewState
.
Active
)
{
this
.
sizeStatusBarEntry
.
hide
();
this
.
zoomStatusBarEntry
.
hide
();
}
this
.
_previewState
=
PreviewState
.
Disposed
;
}));
const
watcher
=
this
.
_register
(
vscode
.
workspace
.
createFileSystemWatcher
(
resource
.
fsPath
));
...
...
@@ -85,17 +85,22 @@ export class Preview extends Disposable {
}
private
render
()
{
if
(
!
this
.
_isWebviewDispose
)
{
if
(
this
.
_previewState
!==
PreviewState
.
Disposed
)
{
this
.
webviewEditor
.
webview
.
html
=
this
.
getWebiewContents
();
}
}
private
update
()
{
this
.
_active
=
this
.
webviewEditor
.
active
;
if
(
this
.
_active
)
{
if
(
this
.
_previewState
===
PreviewState
.
Disposed
)
{
return
;
}
if
(
this
.
webviewEditor
.
active
)
{
this
.
_previewState
=
PreviewState
.
Active
;
this
.
sizeStatusBarEntry
.
show
();
this
.
zoomStatusBarEntry
.
show
();
}
else
{
this
.
_previewState
=
PreviewState
.
Visible
;
this
.
sizeStatusBarEntry
.
hide
();
this
.
zoomStatusBarEntry
.
hide
();
}
...
...
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