henry pushed to branch tor-browser-140.1.0esr-15.0-1 at The Tor Project / Applications / Tor Browser Commits: cf9b46aa by Henry Wilkes at 2025-07-29T12:33:19+01:00 fixup! BB 41581: Hide NoScript extension's toolbar button by default. TB 43874: Incorporate our unified extension button hiding logic into mozilla's changes for ESR 140. - - - - - 2 changed files: - browser/base/content/browser-addons.js - browser/themes/shared/addons/unified-extensions.css Changes: ===================================== browser/base/content/browser-addons.js ===================================== @@ -2026,13 +2026,13 @@ var gUnifiedExtensions = { // extension.hideUnifiedWhenEmpty, which can effect the visibility of the // unified-extensions-button. // See tor-browser#41581. - this._hideNoScriptObserver = () => this._updateVisibility(); + this._hideNoScriptObserver = () => this._updateHideEmpty(); Services.prefs.addObserver(HIDE_NO_SCRIPT_PREF, this._hideNoScriptObserver); Services.prefs.addObserver( HIDE_UNIFIED_WHEN_EMPTY_PREF, this._hideNoScriptObserver ); - this._updateVisibility(); + this._updateHideEmpty(); // Will trigger updateButtonVisibility; this._initialized = true; }, @@ -2071,10 +2071,14 @@ var gUnifiedExtensions = { }, onAppMenuShowing() { + // Only show the extension menu item if the extension button is not pinned + // and the extension popup is not empty. + // NOTE: This condition is different than _shouldShowButton. + const hideExtensionItem = this.buttonAlwaysVisible || this._hideEmpty; document.getElementById("appMenu-extensions-themes-button").hidden = - !this.buttonAlwaysVisible; + !hideExtensionItem; document.getElementById("appMenu-unified-extensions-button").hidden = - this.buttonAlwaysVisible; + hideExtensionItem; }, onLocationChange(browser, webProgress, _request, _uri, flags) { @@ -2089,9 +2093,14 @@ var gUnifiedExtensions = { }, updateButtonVisibility() { + if (this._hideEmpty === null) { + return; + } // TODO: Bug 1778684 - Auto-hide button when there is no active extension. + // Hide the extension button when it is empty. See tor-browser#41581. + // Likely will conflict with mozilla's Bug 1778684. See tor-browser#42635. let shouldShowButton = - this.buttonAlwaysVisible || + this._shouldShowButton || // If anything is anchored to the button, keep it visible. this._button.open || // Button will be open soon - see ensureButtonShownBeforeAttachingPanel. @@ -2117,7 +2126,7 @@ var gUnifiedExtensions = { }, ensureButtonShownBeforeAttachingPanel(panel) { - if (!this.buttonAlwaysVisible && !this._button.open) { + if (!this._shouldShowButton && !this._button.open) { // When the panel is anchored to the button, its "open" attribute will be // set, which visually renders as a "button pressed". Until we get there, // we need to make sure that the button is visible so that it can serve @@ -2131,7 +2140,7 @@ var gUnifiedExtensions = { if (this._button.open) { this._buttonShownBeforeButtonOpen = false; } - if (!this.buttonAlwaysVisible && !this._button.open) { + if (!this._shouldShowButton && !this._button.open) { this.updateButtonVisibility(); } }, @@ -2261,18 +2270,35 @@ var gUnifiedExtensions = { }, /** - * Potentially hide the unified-extensions-button if it would be empty. + * Whether the extension button should be hidden because it is empty. Or + * `null` when uninitialised. + * + * @type {?boolean} */ - // See tor-browser#41581. - // The behaviour overlaps with a proposal in mozilla Bug 1778684, which has - // not yet been implemented as of June 2024 (start of ESR 128). - // See tor-browser#42635 - _updateVisibility() { - this.button.classList.toggle( - "hide-empty", + _hideEmpty: null, + + /** + * Update the _hideEmpty attribute when the preference or hasExtensionsInPanel + * value may have changed. + */ + _updateHideEmpty() { + const prevHideEmpty = this._hideEmpty; + this._hideEmpty = Services.prefs.getBoolPref(HIDE_UNIFIED_WHEN_EMPTY_PREF, true) && - !this.hasExtensionsInPanel() - ); + !this.hasExtensionsInPanel(); + if (this._hideEmpty !== prevHideEmpty) { + this.updateButtonVisibility(); + } + }, + + /** + * Whether we should show the extension button, regardless of whether it is + * needed as a popup anchor, etc. + * + * @type {boolean} + */ + get _shouldShowButton() { + return this.buttonAlwaysVisible && !this._hideEmpty; }, /** @@ -2860,15 +2886,18 @@ var gUnifiedExtensions = { }, onWidgetRemoved() { - this._updateVisibility(); + // hasExtensionsInPanel may have changed. + this._updateHideEmpty(); }, onWidgetDestroyed() { - this._updateVisibility(); + // hasExtensionsInPanel may have changed. + this._updateHideEmpty(); }, onWidgetAdded(aWidgetId, aArea) { - this._updateVisibility(); + // hasExtensionsInPanel may have changed. + this._updateHideEmpty(); // When we pin a widget to the toolbar from a narrow window, the widget // will be overflowed directly. In this case, we do not want to change the @@ -2885,7 +2914,8 @@ var gUnifiedExtensions = { }, onWidgetOverflow(aNode) { - this._updateVisibility(); + // hasExtensionsInPanel may have changed. + this._updateHideEmpty(); // We register a CUI listener for each window so we make sure that we // handle the event for the right window here. @@ -2897,7 +2927,8 @@ var gUnifiedExtensions = { }, onWidgetUnderflow(aNode) { - this._updateVisibility(); + // hasExtensionsInPanel may have changed. + this._updateHideEmpty(); // We register a CUI listener for each window so we make sure that we // handle the event for the right window here. ===================================== browser/themes/shared/addons/unified-extensions.css ===================================== @@ -294,21 +294,3 @@ unified-extensions-item.unified-extensions-item { } } } - -/* Extra rule for tor-browser. See tor-browser#41581. - * We want to hide the unified-extensions-button when it is empty. - * However, this button is needed as an anchor for addon notifications. E.g. - * when installing another addon and permissions pop up. - * If we simply marked it as "hidden" then it would not be used as an anchor, so - * the popup would fall back to using the identity button as an anchor instead. - * So instead, we use "visibility: collapse" whilst it is empty *and* it is not - * being used as an anchor (the open attribute is missing). */ -#unified-extensions-button.hide-empty:not([open]) { - visibility: collapse; - /* Ensure getBoundingClientRect().width returns 0. - * Even though this button is collapsed, and therefore should not take up any - * layout space, getBoundingClientRect will still measure the padding. - * If this was not zero, OverflowableToolbar#getOverflowInfo would - * over-measure the children width and would always overflow. */ - padding-inline: 0; -} View it on GitLab: https://gitlab.torproject.org/tpo/applications/tor-browser/-/commit/cf9b46aa... -- View it on GitLab: https://gitlab.torproject.org/tpo/applications/tor-browser/-/commit/cf9b46aa... 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