sample(dialogs): add 模拟更新下载对话框.js

app/src/main/assets/sample/对话框/模拟更新下载对话框.js

@@ -0,0 +1,66 @@
+var releaseNotes = "版本 v7.7.7\n"
+    + "更新日志:\n"
+    + "* 新增 若干Bug\n";
+dialogs.build({
+    title: "发现新版本",
+    content: releaseNotes,
+    positive: "立即下载",
+    negative: "取消",
+    neutral: "到浏览器下载"
+})
+    .on("positive", download)
+    .on("neutral", () => {
+        app.openUrl("https://www.autojs.org");
+    })
+    .show();
+
+var downloadDialog = null;
+var downloadId = -1;
+
+function download(){
+    downloadDialog = dialogs.build({
+        title: "下载中...",
+        positive: "暂停",
+        negative: "取消",
+        progress: {
+            max: 100,
+            showMinMax: true
+        },
+        autoDismiss: false
+    })
+        .on("positive", ()=>{
+            if(downloadDialog.getActionButton("positive") == "暂停"){
+                stopDownload();
+                downloadDialog.setActionButton("positive", "继续");
+            }else{
+                startDownload();
+                downloadDialog.setActionButton("positive", "暂停");
+            }
+        })
+        .on("negative", ()=>{
+            stopDownload();
+            downloadDialog.dismiss();
+            downloadDialog = null;
+        })
+        .show();
+    startDownload();
+}
+
+function startDownload(){
+    downloadId = setInterval(()=>{
+        var p = downloadDialog.getProgress();
+        if(p >= 100){
+            stopDownload();
+            downloadDialog.dismiss();
+            downloadDialog = null;
+            toast("下载完成");
+        }else{
+            downloadDialog.setProgress(p + 1);
+        }
+    }, 100);
+}
+
+function stopDownload(){
+    clearInterval(downloadId);
+}
+