gecko-dev/toolkit/content/minimal-xul.css

/* 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/. */

/**
 * This file should only contain a minimal set of rules for the XUL elements
 * that may be implicitly created as part of HTML/SVG documents (e.g.
 * scrollbars).  Rules for everything else related to XUL can be found in
 * xul.css.  (This split of the XUL rules is to minimize memory use and improve
 * performance in HTML/SVG documents.)
 *
 * This file should also not contain any app specific styling.  Defaults for
 * widgets of a particular application should be in that application's style
 * sheet.  For example style definitions for navigator can be found in
 * navigator.css.
 *
 * THIS FILE IS LOCKED DOWN.  YOU ARE NOT ALLOWED TO MODIFY IT WITHOUT FIRST
 * HAVING YOUR CHANGES REVIEWED BY enndeakin@gmail.com
 */

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* set default namespace to XUL */

* {
  -moz-user-focus: ignore;
  -moz-user-select: none;
  display: -moz-box;
  box-sizing: border-box;
}

/* hide the content and destroy the frame */
[hidden="true"] {
  display: none;
}

/* hide the content, but don't destroy the frames */
[collapsed="true"],
[moz-collapsed="true"] {
  visibility: collapse;
}

/* Rules required for style caching of anonymous content scrollbar parts */

scrollcorner, resizer, scrollbar, scrollbarbutton, slider {
  /* All scrollbar parts must not inherit any properties from the scrollable
   * element (except for visibility), for the anonymous content style caching
   * system to work.
   */
  all: initial;
  visibility: inherit;

  /* These properties are not included in 'all'. */
  -moz-list-reversed: initial;
  -moz-font-smoothing-background-color: initial;

  /* Using initial is not sufficient for direction, since its initial value can
   * depend on the document's language.
   *
   * LTR is what we want for all scrollbar parts anyway, so that e.g. we don't
   * reverse the rendering of a horizontal scrollbar.
   */
  direction: ltr;

  /* Similarly for font properties, whose initial values depend on the
   * document's language.  Scrollbar parts don't have any text or rely on
   * font metrics.
   */
  font: 16px sans-serif;

  /* The initial value of justify-items is `legacy`, which makes it depend on
   * the parent style.
   *
   * Reset it to something else.
   */
  justify-items: start;

  /* Duplicate the rules from the '*' rule above, which were clobbered by the
   * 'all: initial' declaration.
   *
   * The other zero specificity rules above are on :root, and scrollbar parts
   * cannot match :root, so no need to duplicate them.
   */
  -moz-user-focus: ignore;
  -moz-user-select: none;
  display: -moz-box;
  box-sizing: border-box;
}

thumb {
  /* Prevent -moz-user-modify declaration from designmode.css having an
   * effect. */
  -moz-user-modify: initial;
}

/* There are other rules that set direction and cursor on scrollbar,
 * expecting them to inherit into its children.  Explicitly inherit those,
 * overriding the 'all: initial; direction: ltr;' declarations above.
 */
scrollbarbutton, slider, thumb {
  direction: inherit;
  cursor: inherit;
}

/********** resizer **********/

resizer {
  position: relative;
  z-index: 2147483647;
  /* Widget gets decide on its own whether or not the native theme should apply,
     based on the context/OS theme. If it does not, SVG background will kick in. */
  -moz-appearance: resizer;

  /* native resizer should never flip on its own;
     we will flip it (or the SVG background) with CSS transform below. */
  direction: ltr;
  writing-mode: initial;

  background: url("chrome://global/skin/icons/resizer.svg") no-repeat;
  background-size: 100% 100%;
  cursor: se-resize;
  width: 15px;
  height: 15px;
}

/* bottomstart/bottomend is supported in XUL window only */
resizer[dir="bottom"][flip],
resizer[dir="bottomleft"],
resizer[dir="bottomstart"]:-moz-locale-dir(ltr),
resizer[dir="bottomend"]:-moz-locale-dir(rtl) {
  transform: scaleX(-1);
}

resizer[dir="bottomleft"],
resizer[dir="bottomstart"]:-moz-locale-dir(ltr),
resizer[dir="bottomend"]:-moz-locale-dir(rtl) {
  cursor: sw-resize;
}

resizer[dir="top"],
resizer[dir="bottom"] {
  cursor: ns-resize;
}

resizer[dir="left"] {
  transform: scaleX(-1);
}

resizer[dir="left"],
resizer[dir="right"] {
  cursor: ew-resize;
}

resizer[dir="topleft"] {
  cursor: nw-resize;
}

resizer[dir="topright"] {
  cursor: ne-resize;
}

/********** scrollbar **********/

thumb {
  display: -moz-box !important;
}

/* Don't collapse thumb when scrollbar is disabled. */
thumb[collapsed="true"] {
  visibility: hidden;
}

scrollbar, scrollbarbutton, scrollcorner, slider, thumb {
  -moz-user-select: none;
}

scrollcorner {
  display: -moz-box !important;
}

scrollcorner[hidden="true"] {
  display: none !important;
}

scrollbar[value="hidden"] {
  visibility: hidden;
}

@media (-moz-scrollbar-start-backward: 0) {
  scrollbarbutton[sbattr="scrollbar-up-top"] {
    display: none;
  }
}

@media (-moz-scrollbar-start-forward: 0) {
  scrollbarbutton[sbattr="scrollbar-down-top"] {
    display: none;
  }
}

@media (-moz-scrollbar-end-backward: 0) {
  scrollbarbutton[sbattr="scrollbar-up-bottom"] {
    display: none;
  }
}

@media (-moz-scrollbar-end-forward: 0) {
  scrollbarbutton[sbattr="scrollbar-down-bottom"] {
    display: none;
  }
}

@media (-moz-scrollbar-thumb-proportional) {
  thumb {
    -moz-box-flex: 1;
  }
}