mirror of
https://github.com/signalapp/Signal-Android.git
synced 2026-04-25 11:20:47 +01:00
View debug log screen through WebView through a module.
This commit is contained in:
lisa-signal
GitHub
5
debuglogs-viewer/lib/src/main/AndroidManifest.xml
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5
debuglogs-viewer/lib/src/main/AndroidManifest.xml
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<?xml version="1.0" encoding="utf-8"?>
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<manifest
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xmlns:android="http://schemas.android.com/apk/res/android">
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</manifest>
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42
debuglogs-viewer/lib/src/main/assets/debuglogs-viewer.html
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debuglogs-viewer/lib/src/main/assets/debuglogs-viewer.html
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<!--
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~ Copyright 2025 Signal Messenger, LLC
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~ SPDX-License-Identifier: AGPL-3.0-only
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-->
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<style>
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#container { position: absolute; top: 0; bottom: 0; left: 0; right: 0; height: 100%; width: 100%; }
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/* Scrollbar Setup */
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.ace_scrollbar::-webkit-scrollbar { width: 0; height: 0; }
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.show-scrollbar .ace_scrollbar::-webkit-scrollbar { width: 5px; height: 5px; }
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.ace_scrollbar::-webkit-scrollbar-thumb { background-color: #999999; }
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/* Light Mode: Line color based on log level */
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.ace_editor { background-color: #FBFCFF; }
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.ace_none { color: #000000; }
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.ace_verbose { color: #515151; }
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.ace_debug { color: #089314; }
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.ace_info { color: #0a7087; }
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.ace_warning { color: #b58c12; }
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.ace_error { color: #af0d0a; }
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/* Dark Mode: Line color based on log level */
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body.dark .ace_editor { background-color: #1B1C1F; }
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body.dark .ace_none { color: #ffffff; }
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body.dark .ace_verbose { color: #8a8a8a; }
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body.dark .ace_debug { color: #5ca72b; }
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body.dark .ace_info { color: #46bbb9; }
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body.dark .ace_warning { color: #cdd637; }
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body.dark .ace_error { color: #ff6b68; }
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</style>
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</head>
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<body>
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<div id="container"></div>
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<script src="https://www.unpkg.com/ace-builds@latest/src-noconflict/ace.js"></script>
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<script src="debuglogs-viewer.js"></script>
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</body>
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</html>
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49
debuglogs-viewer/lib/src/main/assets/debuglogs-viewer.js
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debuglogs-viewer/lib/src/main/assets/debuglogs-viewer.js
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// Create custom text mode to color different levels of debug log lines
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const TextMode = ace.require("ace/mode/text").Mode;
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const TextHighlightRules = ace.require("ace/mode/text_highlight_rules").TextHighlightRules;
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function CustomHighlightRules() {
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this.$rules = {
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start: [
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{ token: "verbose", regex: "^.*\\sV\\s.*$" },
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{ token: "debug", regex: "^.*\\sD\\s.*$" },
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{ token: "info", regex: "^.*\\sI\\s.*$" },
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{ token: "warning", regex: "^.*\\sW\\s.*$" },
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{ token: "error", regex: "^.*\\sE\\s.*$" },
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{ token: "none", regex: ".*" },
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],
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};
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}
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CustomHighlightRules.prototype = new TextHighlightRules();
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function CustomMode() {
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TextMode.call(this);
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this.HighlightRules = CustomHighlightRules;
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}
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CustomMode.prototype = Object.create(TextMode.prototype);
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CustomMode.prototype.constructor = CustomMode;
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// Create Ace Editor using the custom mode
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let editor = ace.edit("container", {
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mode: new CustomMode(),
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theme: "ace/theme/textmate",
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wrap: false, // Allow for horizontal scrolling
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readOnly: true,
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showGutter: false,
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highlightActiveLine: false,
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highlightSelectedWord: false, // Prevent Ace Editor from automatically highlighting all instances of a selected word (really laggy!)
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showPrintMargin: false,
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});
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// Show scrollbar that fades after a second since last scroll
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let timeout;
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function showScrollBar() {
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editor.container.classList.add("show-scrollbar");
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clearTimeout(timeout);
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timeout = setTimeout(() => editor.container.classList.remove("show-scrollbar"), 1000);
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}
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editor.session.on("changeScrollTop", showScrollBar);
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editor.session.on("changeScrollLeft", showScrollBar);
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/*
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* Copyright 2025 Signal Messenger, LLC
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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package org.signal.debuglogsviewer
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import android.content.ClipData
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import android.content.ClipboardManager
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import android.content.Context
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import android.content.res.Configuration
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import android.webkit.WebView
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import android.webkit.WebViewClient
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import kotlinx.coroutines.Runnable
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import org.json.JSONObject
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var readOnly = true
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object DebugLogsViewer {
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@JvmStatic
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fun initWebView(webview: WebView, context: Context, onFinished: Runnable) {
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webview.settings.apply {
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javaScriptEnabled = true
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builtInZoomControls = true
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displayZoomControls = false
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}
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webview.isVerticalScrollBarEnabled = false
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webview.isHorizontalScrollBarEnabled = false
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webview.loadUrl("file:///android_asset/debuglogs-viewer.html")
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webview.webViewClient = object : WebViewClient() {
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override fun onPageFinished(view: WebView?, url: String?) {
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// Set dark mode colors if in dark mode
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val isDarkMode = (context.resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK) == Configuration.UI_MODE_NIGHT_YES
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if (isDarkMode) {
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webview.evaluateJavascript("document.body.classList.add('dark');", null)
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}
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onFinished.run()
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}
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}
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}
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@JvmStatic
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fun presentLines(webview: WebView, lines: String) {
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// Set the debug log lines
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val escaped = JSONObject.quote(lines)
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webview.evaluateJavascript("editor.insert($escaped);", null)
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}
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@JvmStatic
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fun scrollToTop(webview: WebView) {
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webview.evaluateJavascript("editor.scrollToRow(0);", null)
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}
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@JvmStatic
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fun scrollToBottom(webview: WebView) {
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webview.evaluateJavascript("editor.scrollToRow(editor.session.getLength() - 1);", null)
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}
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@JvmStatic
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fun onFind(webview: WebView) {
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webview.evaluateJavascript("document.getElementById('searchBar').style.display = 'block';", null)
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}
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@JvmStatic
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fun onFilter(webview: WebView) {
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webview.evaluateJavascript("document.getElementById('filterLevel').style.display = 'block';", null)
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}
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@JvmStatic
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fun onEdit(webview: WebView) {
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readOnly = !readOnly
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webview.evaluateJavascript("editor.setReadOnly($readOnly);", null)
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}
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@JvmStatic
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fun onCancelEdit(webview: WebView, lines: String) {
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readOnly = !readOnly
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webview.evaluateJavascript("editor.setReadOnly($readOnly);", null)
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webview.evaluateJavascript("editor.setValue($lines, -1);", null)
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}
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@JvmStatic
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fun onCopy(webview: WebView, context: Context, appName: String) {
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webview.evaluateJavascript ("editor.getValue();") { value ->
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val clipboard = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
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val clip = ClipData.newPlainText(appName, value)
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clipboard.setPrimaryClip(clip)
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}
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}
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}
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