forked from mirrors/gecko-dev
311 lines
8.7 KiB
JavaScript
311 lines
8.7 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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// This is loaded into all XUL windows. Wrap in a block to prevent
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// leaking to window scope.
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{
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class MozButtonBase extends MozElements.BaseText {
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constructor() {
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super();
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/**
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* While it would seem we could do this by handling oncommand, we can't
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* because any external oncommand handlers might get called before ours,
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* and then they would see the incorrect value of checked. Additionally
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* a command attribute would redirect the command events anyway.
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*/
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this.addEventListener("click", event => {
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if (event.button != 0) {
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return;
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}
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this._handleClick();
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});
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this.addEventListener("keypress", event => {
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if (event.key != " ") {
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return;
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}
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this._handleClick();
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// Prevent page from scrolling on the space key.
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event.preventDefault();
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});
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this.addEventListener("keypress", event => {
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if (this.hasMenu()) {
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if (this.open) {
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return;
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}
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} else {
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if (
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event.keyCode == KeyEvent.DOM_VK_UP ||
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(event.keyCode == KeyEvent.DOM_VK_LEFT &&
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document.defaultView.getComputedStyle(this.parentNode)
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.direction == "ltr") ||
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(event.keyCode == KeyEvent.DOM_VK_RIGHT &&
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document.defaultView.getComputedStyle(this.parentNode)
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.direction == "rtl")
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) {
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event.preventDefault();
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window.document.commandDispatcher.rewindFocus();
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return;
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}
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if (
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event.keyCode == KeyEvent.DOM_VK_DOWN ||
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(event.keyCode == KeyEvent.DOM_VK_RIGHT &&
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document.defaultView.getComputedStyle(this.parentNode)
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.direction == "ltr") ||
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(event.keyCode == KeyEvent.DOM_VK_LEFT &&
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document.defaultView.getComputedStyle(this.parentNode)
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.direction == "rtl")
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) {
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event.preventDefault();
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window.document.commandDispatcher.advanceFocus();
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return;
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}
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}
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if (
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event.keyCode ||
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event.charCode <= 32 ||
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event.altKey ||
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event.ctrlKey ||
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event.metaKey
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) {
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return;
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} // No printable char pressed, not a potential accesskey
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// Possible accesskey pressed
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var charPressedLower = String.fromCharCode(
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event.charCode
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).toLowerCase();
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// If the accesskey of the current button is pressed, just activate it
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if (this.accessKey.toLowerCase() == charPressedLower) {
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this.click();
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return;
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}
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// Search for accesskey in the list of buttons for this doc and each subdoc
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// Get the buttons for the main document and all sub-frames
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for (
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var frameCount = -1;
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frameCount < window.top.frames.length;
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frameCount++
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) {
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var doc =
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frameCount == -1
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? window.top.document
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: window.top.frames[frameCount].document;
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if (this.fireAccessKeyButton(doc.documentElement, charPressedLower)) {
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return;
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}
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}
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// Test dialog buttons
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let buttonBox = window.top.document.documentElement.buttonBox;
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if (buttonBox) {
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this.fireAccessKeyButton(buttonBox, charPressedLower);
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}
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});
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}
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set type(val) {
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this.setAttribute("type", val);
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}
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get type() {
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return this.getAttribute("type");
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}
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set disabled(val) {
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if (val) {
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this.setAttribute("disabled", "true");
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} else {
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this.removeAttribute("disabled");
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}
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}
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get disabled() {
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return this.getAttribute("disabled") == "true";
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}
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set group(val) {
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this.setAttribute("group", val);
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}
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get group() {
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return this.getAttribute("group");
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}
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set open(val) {
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if (this.hasMenu()) {
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this.openMenu(val);
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} else if (val) {
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// Fall back to just setting the attribute
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this.setAttribute("open", "true");
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} else {
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this.removeAttribute("open");
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}
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}
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get open() {
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return this.hasAttribute("open");
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}
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set checked(val) {
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if (this.type == "radio" && val) {
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var sibs = this.parentNode.getElementsByAttribute("group", this.group);
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for (var i = 0; i < sibs.length; ++i) {
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sibs[i].removeAttribute("checked");
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}
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}
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if (val) {
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this.setAttribute("checked", "true");
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} else {
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this.removeAttribute("checked");
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}
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}
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get checked() {
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return this.hasAttribute("checked");
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}
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filterButtons(node) {
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// if the node isn't visible, don't descend into it.
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var cs = node.ownerGlobal.getComputedStyle(node);
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if (cs.visibility != "visible" || cs.display == "none") {
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return NodeFilter.FILTER_REJECT;
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}
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// but it may be a popup element, in which case we look at "state"...
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if (cs.display == "-moz-popup" && node.state != "open") {
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return NodeFilter.FILTER_REJECT;
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}
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// OK - the node seems visible, so it is a candidate.
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if (node.localName == "button" && node.accessKey && !node.disabled) {
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return NodeFilter.FILTER_ACCEPT;
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}
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return NodeFilter.FILTER_SKIP;
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}
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fireAccessKeyButton(aSubtree, aAccessKeyLower) {
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var iterator = aSubtree.ownerDocument.createTreeWalker(
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aSubtree,
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NodeFilter.SHOW_ELEMENT,
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this.filterButtons
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);
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while (iterator.nextNode()) {
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var test = iterator.currentNode;
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if (
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test.accessKey.toLowerCase() == aAccessKeyLower &&
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!test.disabled &&
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!test.collapsed &&
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!test.hidden
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) {
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test.focus();
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test.click();
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return true;
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}
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}
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return false;
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}
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_handleClick() {
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if (!this.disabled) {
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if (this.type == "checkbox") {
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this.checked = !this.checked;
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} else if (this.type == "radio") {
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this.checked = true;
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}
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}
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}
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}
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MozXULElement.implementCustomInterface(MozButtonBase, [
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Ci.nsIDOMXULButtonElement,
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]);
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MozElements.ButtonBase = MozButtonBase;
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class MozButton extends MozButtonBase {
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static get inheritedAttributes() {
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return {
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".box-inherit": "align,dir,pack,orient",
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".button-icon": "src=image",
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".button-text": "value=label,accesskey,crop",
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".button-menu-dropmarker": "open,disabled,label",
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};
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}
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get icon() {
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return this.querySelector(".button-icon");
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}
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static get buttonFragment() {
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let frag = document.importNode(
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MozXULElement.parseXULToFragment(`
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<hbox class="box-inherit button-box" align="center" pack="center" flex="1" anonid="button-box">
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<image class="button-icon"/>
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<label class="button-text"/>
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</hbox>`),
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true
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);
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Object.defineProperty(this, "buttonFragment", { value: frag });
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return frag;
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}
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static get menuFragment() {
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let frag = document.importNode(
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MozXULElement.parseXULToFragment(`
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<hbox class="box-inherit button-box" align="center" pack="center" flex="1">
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<hbox class="box-inherit" align="center" pack="center" flex="1">
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<image class="button-icon"/>
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<label class="button-text"/>
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</hbox>
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<dropmarker class="button-menu-dropmarker"/>
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</hbox>`),
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true
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);
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Object.defineProperty(this, "menuFragment", { value: frag });
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return frag;
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}
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get _hasConnected() {
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return this.querySelector(":scope > .button-box") != null;
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}
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connectedCallback() {
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if (this.delayConnectedCallback() || this._hasConnected) {
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return;
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}
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let fragment;
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if (this.type === "menu") {
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fragment = MozButton.menuFragment;
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this.addEventListener("keypress", event => {
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if (event.keyCode != KeyEvent.DOM_VK_RETURN && event.key != " ") {
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return;
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}
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this.open = true;
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// Prevent page from scrolling on the space key.
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if (event.key == " ") {
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event.preventDefault();
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}
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});
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} else {
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fragment = this.constructor.buttonFragment;
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}
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this.appendChild(fragment.cloneNode(true));
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this.initializeAttributeInheritance();
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}
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}
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customElements.define("button", MozButton);
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}
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