refactor error reporting to AppBase; keep exception_error() for now as a shim

js/AppBase.js

@@ -7,15 +7,15 @@ define(["dojo/_base/declare"], function (declare) {
 		hotkey_prefix: 0,
 		hotkey_prefix_pressed: false,
 		hotkey_prefix_timeout: 0,
+		constructor: function() {
+			window.onerror = this.Error.onWindowError;
+		},
 		getInitParam: function(k) {
 			return this._initParams[k];
 		},
 		setInitParam: function(k, v) {
 			this._initParams[k] = v;
 		},
-		constructor: function(args) {
-			//
-		},
 		enableCsrfSupport: function() {
 			Ajax.Base.prototype.initialize = Ajax.Base.prototype.initialize.wrap(
 				function (callOriginal, options) {
@@ -176,7 +176,7 @@ define(["dojo/_base/declare"], function (declare) {
 
 					if (callback) callback(transport);
 				} catch (e) {
-					exception_error(e);
+					this.Error.report(e);
 				}
 			});
 
@@ -355,5 +355,67 @@ define(["dojo/_base/declare"], function (declare) {
 		explainError: function(code) {
 			return this.displayDlg(__("Error explained"), "explainError", code);
 		},
+		Error: {
+			report: function(error, params) {
+				params = params || {};
+
+				if (!error) return;
+
+				console.error("[Error.report]", error, params);
+
+				const message = params.message ? params.message : error.toString();
+
+				try {
+					xhrPost("backend.php",
+						{op: "rpc", method: "log",
+							file: params.filename ? params.filename : error.fileName,
+							line: params.lineno ? params.lineno : error.lineNumber,
+							msg: message,
+							context: error.stack},
+						(transport) => {
+							console.warn("[Error.report] log response", transport.responseText);
+						});
+				} catch (re) {
+					console.error("[Error.report] exception while saving logging error on server", re);
+				}
+
+				try {
+					if (dijit.byId("exceptionDlg"))
+						dijit.byId("exceptionDlg").destroyRecursive();
+
+					let content = "<div class='fatalError'><p>" + message + "</p>";
+
+					if (error.stack)
+						content += "<div><b>Stack trace:</b></div>" +
+							"<textarea name=\"stack\" readonly=\"1\">" + error.stack + "</textarea>";
+
+					content += "<div style='text-align : center'>";
+
+					content += "<button dojoType=\"dijit.form.Button\" " +
+						"onclick=\"dijit.byId('exceptionDlg').hide()\">" +
+						__('Close this window') + "</button>";
+					content += "</div>";
+
+					const dialog = new dijit.Dialog({
+						id: "exceptionDlg",
+						title: "Unhandled exception",
+						style: "width: 600px",
+						content: content
+					});
+
+					dialog.show();
+				} catch (de) {
+					console.error("[Error.report] exception while showing error dialog", de);
+
+					alert(error.stack ? error.stack : message);
+				}
+
+			},
+			onWindowError: function (message, filename, lineno, colno, error) {
+				// called without context (this) from window.onerror
+				App.Error.report(error,
+					{message: message, filename: filename, lineno: lineno, colno: colno});
+			},
+		}
 	});
 });

js/Article.js

@@ -168,7 +168,7 @@ define(["dojo/_base/declare"], function (declare) {
 						Notify.close();
 
 					} catch (e) {
-						exception_error(e);
+						App.Error.report(e);
 					}
 				})
 			}
@@ -206,7 +206,7 @@ define(["dojo/_base/declare"], function (declare) {
 									if (tooltip) tooltip.attr('label', data.content_full);
 								}
 							} catch (e) {
-								exception_error(e);
+								App.Error.report(e);
 							}
 						});
 					}

js/CommonDialogs.js

@@ -152,7 +152,7 @@ define(["dojo/_base/declare"], function (declare) {
 
 							} catch (e) {
 								console.error(transport.responseText);
-								exception_error(e);
+								App.Error.report(e);
 							}
 						});
 					}

js/CommonFilters.js

@@ -67,7 +67,7 @@ define(["dojo/_base/declare"], function (declare) {
 						parentNode.appendChild(li);
 					}
 				} catch (e) {
-					exception_error(e);
+					App.Error.report(e);
 				}
 			});
 		},
@@ -117,7 +117,7 @@ define(["dojo/_base/declare"], function (declare) {
 					}
 
 				} catch (e) {
-					exception_error(e);
+					App.Error.report(e);
 				}
 			});
 		},
@@ -238,7 +238,7 @@ define(["dojo/_base/declare"], function (declare) {
 								console.log("getTestResults: dialog closed, bailing out.");
 							}
 						} catch (e) {
-							exception_error(e);
+							App.Error.report(e);
 						}
 
 					});

js/FeedTree.js

@@ -207,7 +207,7 @@ define(["dojo/_base/declare", "dojo/dom-construct", "dijit/Tree", "dijit/Menu"],
 					}
 				}
 			} catch (e) {
-				exception_error(e);
+				App.Error.report(e);
 			}
 		},
 		findNodeParentsAndExpandThem: function(feed, is_cat, root, parents) {
@@ -242,7 +242,7 @@ define(["dojo/_base/declare", "dojo/dom-construct", "dijit/Tree", "dijit/Menu"],
 							this.expandParentNodes(feed, is_cat, parents.slice(0));
 						}
 			} catch (e) {
-				exception_error(e);
+				App.Error.report(e);
 			}
 		},
 		selectFeed: function(feed, is_cat) {

js/Feeds.js

@@ -198,13 +198,13 @@ define(["dojo/_base/declare"], function (declare) {
 						Feeds.init();
 						App.setLoadingProgress(25);
 					} catch (e) {
-						exception_error(e);
+						App.Error.report(e);
 					}
 				});
 
 				tree.startup();
 			} catch (e) {
-				exception_error(e);
+				App.Error.report(e);
 			}
 		},
 		init: function() {
@@ -380,7 +380,7 @@ define(["dojo/_base/declare"], function (declare) {
 							Headlines.onLoaded(transport, offset);
 							PluginHost.run(PluginHost.HOOK_FEED_LOADED, [feed, is_cat]);
 						} catch (e) {
-							exception_error(e);
+							App.Error.report(e);
 						}
 					});
 				});

js/common.js

@@ -4,6 +4,16 @@
 let _label_base_index = -1024;
 let loading_progress = 0;
 
+/* error reporting shim */
+
+// TODO: deprecated; remove
+function exception_error(e, e_compat, filename, lineno, colno) {
+	if (typeof e == "string")
+		e = e_compat;
+
+	App.Error.report(e, {filename: filename, lineno: lineno, colno: colno});
+}
+
 /* xhr shorthand helpers */
 
 function xhrPost(url, params, complete) {
@@ -118,71 +128,6 @@ const Cookie = {
 	}
 };
 
-/* error reporting */
-
-function report_error(message, filename, lineno, colno, error) {
-	exception_error(error, null, filename, lineno);
-}
-
-function exception_error(e, e_compat, filename, lineno, colno) {
-	if (typeof e == "string") e = e_compat;
-
-	if (!e) return; // no exception object, nothing to report.
-
-	try {
-		console.error(e);
-		const msg = e.toString();
-
-		try {
-			xhrPost("backend.php",
-				{op: "rpc", method: "log",
-					file: e.fileName ? e.fileName : filename,
-					line: e.lineNumber ? e.lineNumber : lineno,
-					msg: msg, context: e.stack},
-				(transport) => {
-					console.warn(transport.responseText);
-				});
-
-		} catch (e) {
-			console.error("Exception while trying to log the error.", e);
-		}
-
-		let content = "<div class='fatalError'><p>" + msg + "</p>";
-
-		if (e.stack) {
-			content += "<div><b>Stack trace:</b></div>" +
-				"<textarea name=\"stack\" readonly=\"1\">" + e.stack + "</textarea>";
-		}
-
-		content += "</div>";
-
-		content += "<div class='dlgButtons'>";
-
-		content += "<button dojoType=\"dijit.form.Button\" "+
-				"onclick=\"dijit.byId('exceptionDlg').hide()\">" +
-				__('Close') + "</button>";
-		content += "</div>";
-
-		if (dijit.byId("exceptionDlg"))
-			dijit.byId("exceptionDlg").destroyRecursive();
-
-		const dialog = new dijit.Dialog({
-			id: "exceptionDlg",
-			title: "Unhandled exception",
-			style: "width: 600px",
-			content: content});
-
-		dialog.show();
-
-	} catch (ei) {
-		console.error("Exception while trying to report an exception:", ei);
-		console.error("Original exception:", e);
-
-		alert("Exception occured while trying to report an exception.\n" +
-			ei.stack + "\n\nOriginal exception:\n" + e.stack);
-	}
-}
-
 /* runtime notifications */
 
 const Notify = {

js/prefs.js

@@ -58,10 +58,6 @@ require(["dojo/_base/kernel",
 		try {
 			const _App = declare("fox.App", AppBase, {
 				constructor: function() {
-					window.onerror = function (message, filename, lineno, colno, error) {
-						report_error(message, filename, lineno, colno, error);
-					};
-
 					parser.parse();
 
 					this.setLoadingProgress(50);
@@ -73,7 +69,7 @@ require(["dojo/_base/kernel",
 						try {
 							this.backendSanityCallback(transport);
 						} catch (e) {
-							exception_error(e);
+							this.Error.report(e);
 						}
 					});
 				},
@@ -149,7 +145,7 @@ require(["dojo/_base/kernel",
 			App = new _App();
 
 		} catch (e) {
-			exception_error(e);
+			this.Error.report(e);
 		}
 	});
 });

js/tt-rss.js

@@ -65,10 +65,6 @@ require(["dojo/_base/kernel",
 				_widescreen_mode: false,
 				hotkey_actions: {},
 				constructor: function () {
-					window.onerror = function (message, filename, lineno, colno, error) {
-						report_error(message, filename, lineno, colno, error);
-					};
-
 					parser.parse();
 
 					this.setLoadingProgress(30);
@@ -91,7 +87,7 @@ require(["dojo/_base/kernel",
 						try {
 							App.backendSanityCallback(transport);
 						} catch (e) {
-							exception_error(e);
+							App.Error.report(e);
 						}
 					});
 				},
@@ -555,7 +551,7 @@ require(["dojo/_base/kernel",
 
 			App = new _App();
 		} catch (e) {
-			exception_error(e);
+			App.Error.report(e);
 		}
 	});
 });