Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 186 insertions, 0 deletions

diff --git a/toolkit/components/prompts/src/PromptUtils.sys.mjs b/toolkit/components/prompts/src/PromptUtils.sys.mjs
new file mode 100644
index 0000000000..7a15802b84
--- /dev/null
+++ b/toolkit/components/prompts/src/PromptUtils.sys.mjs
@@ -0,0 +1,186 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+export var PromptUtils = {
+  // Fire a dialog open/close event. Used by tabbrowser to focus the
+  // tab which is triggering a prompt.
+  // For remote dialogs, we pass in a different DOM window and a separate
+  // target. If the caller doesn't pass in the target, then we'll simply use
+  // the passed-in DOM window.
+  // The detail may contain information about the principal on which the
+  // prompt is triggered, as well as whether or not this is a tabprompt
+  // (ie tabmodal alert/prompt/confirm and friends)
+  fireDialogEvent(domWin, eventName, maybeTarget, detail) {
+    let target = maybeTarget || domWin;
+    let eventOptions = { cancelable: true, bubbles: true };
+    if (detail) {
+      eventOptions.detail = detail;
+    }
+    let event = new domWin.CustomEvent(eventName, eventOptions);
+    let winUtils = domWin.windowUtils;
+    winUtils.dispatchEventToChromeOnly(target, event);
+  },
+
+  objectToPropBag(obj) {
+    let bag = Cc["@mozilla.org/hash-property-bag;1"].createInstance(
+      Ci.nsIWritablePropertyBag2
+    );
+    bag.QueryInterface(Ci.nsIWritablePropertyBag);
+
+    for (let propName in obj) {
+      bag.setProperty(propName, obj[propName]);
+    }
+
+    return bag;
+  },
+
+  propBagToObject(propBag, obj) {
+    // Here we iterate over the object's original properties, not the bag
+    // (ie, the prompt can't return more/different properties than were
+    // passed in). This just helps ensure that the caller provides default
+    // values, lest the prompt forget to set them.
+    for (let propName in obj) {
+      obj[propName] = propBag.getProperty(propName);
+    }
+  },
+};
+
+/**
+ * This helper handles the enabling/disabling of dialogs that might
+ * be subject to fast-clicking attacks. It handles the initial delayed
+ * enabling of the dialog, as well as disabling it on blur and reapplying
+ * the delay when the dialog regains focus.
+ *
+ * @param enableDialog   A custom function to be called when the dialog
+ *                       is to be enabled.
+ * @param diableDialog   A custom function to be called when the dialog
+ *                       is to be disabled.
+ * @param focusTarget    The window used to watch focus/blur events.
+ */
+export var EnableDelayHelper = function ({
+  enableDialog,
+  disableDialog,
+  focusTarget,
+}) {
+  this.enableDialog = makeSafe(enableDialog);
+  this.disableDialog = makeSafe(disableDialog);
+  this.focusTarget = focusTarget;
+
+  this.disableDialog();
+
+  this.focusTarget.addEventListener("blur", this);
+  this.focusTarget.addEventListener("focus", this);
+  // While the user key-repeats, we want to renew the timer until keyup:
+  this.focusTarget.addEventListener("keyup", this, true);
+  this.focusTarget.addEventListener("keydown", this, true);
+  this.focusTarget.document.addEventListener("unload", this);
+
+  this.startOnFocusDelay();
+};
+
+EnableDelayHelper.prototype = {
+  get delayTime() {
+    return Services.prefs.getIntPref("security.dialog_enable_delay");
+  },
+
+  handleEvent(event) {
+    if (
+      !event.type.startsWith("key") &&
+      event.target != this.focusTarget &&
+      event.target != this.focusTarget.document
+    ) {
+      return;
+    }
+
+    switch (event.type) {
+      case "keyup":
+        // As soon as any key goes up, we can stop treating keypresses
+        // as indicative of key-repeating that should prolong the timer.
+        this.focusTarget.removeEventListener("keyup", this, true);
+        this.focusTarget.removeEventListener("keydown", this, true);
+        break;
+
+      case "keydown":
+        // Renew timer for repeating keydowns:
+        if (this._focusTimer) {
+          this._focusTimer.cancel();
+          this._focusTimer = null;
+          this.startOnFocusDelay();
+          event.preventDefault();
+        }
+        break;
+
+      case "blur":
+        this.onBlur();
+        break;
+
+      case "focus":
+        this.onFocus();
+        break;
+
+      case "unload":
+        this.onUnload();
+        break;
+    }
+  },
+
+  onBlur() {
+    this.disableDialog();
+    // If we blur while waiting to enable the buttons, just cancel the
+    // timer to ensure the delay doesn't fire while not focused.
+    if (this._focusTimer) {
+      this._focusTimer.cancel();
+      this._focusTimer = null;
+    }
+  },
+
+  onFocus() {
+    this.startOnFocusDelay();
+  },
+
+  onUnload() {
+    this.focusTarget.removeEventListener("blur", this);
+    this.focusTarget.removeEventListener("focus", this);
+    this.focusTarget.removeEventListener("keyup", this, true);
+    this.focusTarget.removeEventListener("keydown", this, true);
+    this.focusTarget.document.removeEventListener("unload", this);
+
+    if (this._focusTimer) {
+      this._focusTimer.cancel();
+      this._focusTimer = null;
+    }
+
+    this.focusTarget = this.enableDialog = this.disableDialog = null;
+  },
+
+  startOnFocusDelay() {
+    if (this._focusTimer) {
+      return;
+    }
+
+    this._focusTimer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+    this._focusTimer.initWithCallback(
+      () => {
+        this.onFocusTimeout();
+      },
+      this.delayTime,
+      Ci.nsITimer.TYPE_ONE_SHOT
+    );
+  },
+
+  onFocusTimeout() {
+    this._focusTimer = null;
+    this.enableDialog();
+  },
+};
+
+function makeSafe(fn) {
+  return function () {
+    // The dialog could be gone by now (if the user closed it),
+    // which makes it likely that the given fn might throw.
+    try {
+      fn();
+    } catch (e) {}
+  };
+}