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|
/* 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/. */
/* import-globals-from extensionControlled.js */
/* import-globals-from preferences.js */
// A tweak to the standard <button> CE to use textContent on the <label>
// inside the button, which allows the text to be highlighted when the user
// is searching.
const MozButton = customElements.get("button");
class HighlightableButton extends MozButton {
static get inheritedAttributes() {
return Object.assign({}, super.inheritedAttributes, {
".button-text": "text=label,accesskey,crop",
});
}
}
customElements.define("highlightable-button", HighlightableButton, {
extends: "button",
});
var gSearchResultsPane = {
listSearchTooltips: new Set(),
listSearchMenuitemIndicators: new Set(),
searchInput: null,
// A map of DOM Elements to a string of keywords used in search
// XXX: We should invalidate this cache on `intl:app-locales-changed`
searchKeywords: new WeakMap(),
inited: false,
// A (node -> boolean) map of subitems to be made visible or hidden.
subItems: new Map(),
searchResultsHighlighted: false,
init() {
if (this.inited) {
return;
}
this.inited = true;
this.searchInput = document.getElementById("searchInput");
this.searchInput.hidden = !Services.prefs.getBoolPref(
"browser.preferences.search"
);
window.addEventListener("resize", () => {
this._recomputeTooltipPositions();
});
if (!this.searchInput.hidden) {
this.searchInput.addEventListener("input", this);
this.searchInput.addEventListener("command", this);
window.addEventListener("DOMContentLoaded", () => {
this.searchInput.focus();
// Initialize other panes in an idle callback.
window.requestIdleCallback(() => this.initializeCategories());
});
}
let helpUrl =
Services.urlFormatter.formatURLPref("app.support.baseURL") +
"preferences";
let helpContainer = document.getElementById("need-help");
helpContainer.querySelector("a").href = helpUrl;
ensureScrollPadding();
},
async handleEvent(event) {
// Ensure categories are initialized if idle callback didn't run sooo enough.
await this.initializeCategories();
this.searchFunction(event);
},
/**
* This stops the search input from moving, when typing in it
* changes which items in the prefs are visible.
*/
fixInputPosition() {
let innerContainer = document.querySelector(".sticky-inner-container");
let width = window.windowUtils.getBoundsWithoutFlushing(innerContainer)
.width;
innerContainer.style.maxWidth = width + "px";
},
/**
* Check that the text content contains the query string.
*
* @param String content
* the text content to be searched
* @param String query
* the query string
* @returns boolean
* true when the text content contains the query string else false
*/
queryMatchesContent(content, query) {
if (!content || !query) {
return false;
}
return content.toLowerCase().includes(query.toLowerCase());
},
categoriesInitialized: false,
/**
* Will attempt to initialize all uninitialized categories
*/
async initializeCategories() {
// Initializing all the JS for all the tabs
if (!this.categoriesInitialized) {
this.categoriesInitialized = true;
// Each element of gCategoryInits is a name
for (let [, /* name */ category] of gCategoryInits) {
if (!category.inited) {
await category.init();
}
}
}
},
/**
* Finds and returns text nodes within node and all descendants
* Iterates through all the sibilings of the node object and adds the sibilings
* to an array if sibiling is a TEXT_NODE else checks the text nodes with in current node
* Source - http://stackoverflow.com/questions/10730309/find-all-text-nodes-in-html-page
*
* @param Node nodeObject
* DOM element
* @returns array of text nodes
*/
textNodeDescendants(node) {
if (!node) {
return [];
}
let all = [];
for (node = node.firstChild; node; node = node.nextSibling) {
if (node.nodeType === node.TEXT_NODE) {
all.push(node);
} else {
all = all.concat(this.textNodeDescendants(node));
}
}
return all;
},
/**
* This function is used to find words contained within the text nodes.
* We pass in the textNodes because they contain the text to be highlighted.
* We pass in the nodeSizes to tell exactly where highlighting need be done.
* When creating the range for highlighting, if the nodes are section is split
* by an access key, it is important to have the size of each of the nodes summed.
* @param Array textNodes
* List of DOM elements
* @param Array nodeSizes
* Running size of text nodes. This will contain the same number of elements as textNodes.
* The first element is the size of first textNode element.
* For any nodes after, they will contain the summation of the nodes thus far in the array.
* Example:
* textNodes = [[This is ], [a], [n example]]
* nodeSizes = [[8], [9], [18]]
* This is used to determine the offset when highlighting
* @param String textSearch
* Concatination of textNodes's text content
* Example:
* textNodes = [[This is ], [a], [n example]]
* nodeSizes = "This is an example"
* This is used when executing the regular expression
* @param String searchPhrase
* word or words to search for
* @returns boolean
* Returns true when atleast one instance of search phrase is found, otherwise false
*/
highlightMatches(textNodes, nodeSizes, textSearch, searchPhrase) {
if (!searchPhrase) {
return false;
}
let indices = [];
let i = -1;
while ((i = textSearch.indexOf(searchPhrase, i + 1)) >= 0) {
indices.push(i);
}
// Looping through each spot the searchPhrase is found in the concatenated string
for (let startValue of indices) {
let endValue = startValue + searchPhrase.length;
let startNode = null;
let endNode = null;
let nodeStartIndex = null;
// Determining the start and end node to highlight from
for (let index = 0; index < nodeSizes.length; index++) {
let lengthNodes = nodeSizes[index];
// Determining the start node
if (!startNode && lengthNodes >= startValue) {
startNode = textNodes[index];
nodeStartIndex = index;
// Calculating the offset when found query is not in the first node
if (index > 0) {
startValue -= nodeSizes[index - 1];
}
}
// Determining the end node
if (!endNode && lengthNodes >= endValue) {
endNode = textNodes[index];
// Calculating the offset when endNode is different from startNode
// or when endNode is not the first node
if (index != nodeStartIndex || index > 0) {
endValue -= nodeSizes[index - 1];
}
}
}
let range = document.createRange();
range.setStart(startNode, startValue);
range.setEnd(endNode, endValue);
this.getFindSelection(startNode.ownerGlobal).addRange(range);
this.searchResultsHighlighted = true;
}
return !!indices.length;
},
/**
* Get the selection instance from given window
*
* @param Object win
* The window object points to frame's window
*/
getFindSelection(win) {
// Yuck. See bug 138068.
let docShell = win.docShell;
let controller = docShell
.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsISelectionDisplay)
.QueryInterface(Ci.nsISelectionController);
let selection = controller.getSelection(
Ci.nsISelectionController.SELECTION_FIND
);
selection.setColors("currentColor", "#ffe900", "currentColor", "#003eaa");
return selection;
},
/**
* Shows or hides content according to search input
*
* @param String event
* to search for filted query in
*/
async searchFunction(event) {
let query = event.target.value.trim().toLowerCase();
if (this.query == query) {
return;
}
let firstQuery = !this.query && query;
let endQuery = !query && this.query;
let subQuery = this.query && query.includes(this.query);
this.query = query;
// If there is a query, don't reshow the existing hidden subitems yet
// to avoid them flickering into view only to be hidden again by
// this next search.
this.removeAllSearchIndicators(window, !query.length);
// Clear telemetry request if user types very frequently.
if (this.telemetryTimer) {
clearTimeout(this.telemetryTimer);
}
let srHeader = document.getElementById("header-searchResults");
let noResultsEl = document.getElementById("no-results-message");
if (this.query) {
// If this is the first query, fix the search input in place.
if (firstQuery) {
this.fixInputPosition();
}
// Showing the Search Results Tag
await gotoPref("paneSearchResults");
srHeader.hidden = false;
let resultsFound = false;
// Building the range for highlighted areas
let rootPreferencesChildren = [
...document.querySelectorAll(
"#mainPrefPane > *:not([data-hidden-from-search], script, stringbundle)"
),
];
if (subQuery) {
// Since the previous query is a subset of the current query,
// there is no need to check elements that is hidden already.
rootPreferencesChildren = rootPreferencesChildren.filter(
el => !el.hidden
);
}
// Attach the bindings for all children if they were not already visible.
for (let child of rootPreferencesChildren) {
if (child.hidden) {
child.classList.add("visually-hidden");
child.hidden = false;
}
}
let ts = performance.now();
let FRAME_THRESHOLD = 1000 / 60;
// Showing or Hiding specific section depending on if words in query are found
for (let child of rootPreferencesChildren) {
if (performance.now() - ts > FRAME_THRESHOLD) {
// Creating tooltips for all the instances found
for (let anchorNode of this.listSearchTooltips) {
this.createSearchTooltip(anchorNode, this.query);
}
ts = await new Promise(resolve =>
window.requestAnimationFrame(resolve)
);
if (query !== this.query) {
return;
}
}
if (
!child.classList.contains("header") &&
!child.classList.contains("subcategory") &&
(await this.searchWithinNode(child, this.query))
) {
child.classList.remove("visually-hidden");
// Show the preceding search-header if one exists.
let groupbox = child.closest("groupbox");
let groupHeader =
groupbox && groupbox.querySelector(".search-header");
if (groupHeader) {
groupHeader.hidden = false;
}
resultsFound = true;
} else {
child.classList.add("visually-hidden");
}
}
// Hide any subitems that don't match the search term and show
// only those that do.
if (this.subItems.size) {
for (let [subItem, matches] of this.subItems) {
subItem.classList.toggle("visually-hidden", !matches);
}
}
noResultsEl.hidden = !!resultsFound;
noResultsEl.setAttribute("query", this.query);
// XXX: This is potentially racy in case where Fluent retranslates the
// message and ereases the query within.
// The feature is not yet supported, but we should fix for it before
// we enable it. See bug 1446389 for details.
let msgQueryElem = document.getElementById("sorry-message-query");
msgQueryElem.textContent = this.query;
if (resultsFound) {
// Creating tooltips for all the instances found
for (let anchorNode of this.listSearchTooltips) {
this.createSearchTooltip(anchorNode, this.query);
}
// Implant search telemetry probe after user stops typing for a while
if (this.query.length >= 2) {
this.telemetryTimer = setTimeout(() => {
Services.telemetry.keyedScalarAdd(
"preferences.search_query",
this.query,
1
);
}, 1000);
}
}
} else {
if (endQuery) {
document
.querySelector(".sticky-inner-container")
.style.removeProperty("max-width");
}
noResultsEl.hidden = true;
document.getElementById("sorry-message-query").textContent = "";
// Going back to General when cleared
await gotoPref("paneGeneral");
srHeader.hidden = true;
// Hide some special second level headers in normal view
for (let element of document.querySelectorAll(".search-header")) {
element.hidden = true;
}
}
window.dispatchEvent(
new CustomEvent("PreferencesSearchCompleted", { detail: query })
);
},
/**
* Finding leaf nodes and checking their content for words to search,
* It is a recursive function
*
* @param Node nodeObject
* DOM Element
* @param String searchPhrase
* @returns boolean
* Returns true when found in at least one childNode, false otherwise
*/
async searchWithinNode(nodeObject, searchPhrase) {
let matchesFound = false;
if (
nodeObject.childElementCount == 0 ||
nodeObject.tagName == "button" ||
nodeObject.tagName == "label" ||
nodeObject.tagName == "description" ||
nodeObject.tagName == "menulist" ||
nodeObject.tagName == "menuitem"
) {
let simpleTextNodes = this.textNodeDescendants(nodeObject);
for (let node of simpleTextNodes) {
let result = this.highlightMatches(
[node],
[node.length],
node.textContent.toLowerCase(),
searchPhrase
);
matchesFound = matchesFound || result;
}
// Collecting data from anonymous content / label / description
let nodeSizes = [];
let allNodeText = "";
let runningSize = 0;
let accessKeyTextNodes = [];
if (
nodeObject.tagName == "label" ||
nodeObject.tagName == "description"
) {
accessKeyTextNodes.push(...simpleTextNodes);
}
for (let node of accessKeyTextNodes) {
runningSize += node.textContent.length;
allNodeText += node.textContent;
nodeSizes.push(runningSize);
}
// Access key are presented
let complexTextNodesResult = this.highlightMatches(
accessKeyTextNodes,
nodeSizes,
allNodeText.toLowerCase(),
searchPhrase
);
// Searching some elements, such as xul:button, have a 'label' attribute that contains the user-visible text.
let labelResult = this.queryMatchesContent(
nodeObject.getAttribute("label"),
searchPhrase
);
// Searching some elements, such as xul:label, store their user-visible text in a "value" attribute.
// Value will be skipped for menuitem since value in menuitem could represent index number to distinct each item.
let valueResult =
nodeObject.tagName !== "menuitem" && nodeObject.tagName !== "radio"
? this.queryMatchesContent(
nodeObject.getAttribute("value"),
searchPhrase
)
: false;
// Searching some elements, such as xul:button, buttons to open subdialogs
// using l10n ids.
let keywordsResult =
nodeObject.hasAttribute("search-l10n-ids") &&
(await this.matchesSearchL10nIDs(nodeObject, searchPhrase));
if (!keywordsResult) {
// Searching some elements, such as xul:button, buttons to open subdialogs
// using searchkeywords attribute.
keywordsResult =
!keywordsResult &&
nodeObject.hasAttribute("searchkeywords") &&
this.queryMatchesContent(
nodeObject.getAttribute("searchkeywords"),
searchPhrase
);
}
// Creating tooltips for buttons
if (
keywordsResult &&
(nodeObject.tagName === "button" || nodeObject.tagName == "menulist")
) {
this.listSearchTooltips.add(nodeObject);
}
if (keywordsResult && nodeObject.tagName === "menuitem") {
nodeObject.setAttribute("indicator", "true");
this.listSearchMenuitemIndicators.add(nodeObject);
let menulist = nodeObject.closest("menulist");
menulist.setAttribute("indicator", "true");
this.listSearchMenuitemIndicators.add(menulist);
}
if (
(nodeObject.tagName == "menulist" ||
nodeObject.tagName == "menuitem") &&
(labelResult || valueResult || keywordsResult)
) {
nodeObject.setAttribute("highlightable", "true");
}
matchesFound =
matchesFound ||
complexTextNodesResult ||
labelResult ||
valueResult ||
keywordsResult;
}
// Should not search unselected child nodes of a <xul:deck> element
// except the "historyPane" <xul:deck> element.
if (nodeObject.tagName == "deck" && nodeObject.id != "historyPane") {
let index = nodeObject.selectedIndex;
if (index != -1) {
let result = await this.searchChildNodeIfVisible(
nodeObject,
index,
searchPhrase
);
matchesFound = matchesFound || result;
}
} else {
for (let i = 0; i < nodeObject.childNodes.length; i++) {
let result = await this.searchChildNodeIfVisible(
nodeObject,
i,
searchPhrase
);
matchesFound = matchesFound || result;
}
}
return matchesFound;
},
/**
* Search for a phrase within a child node if it is visible.
*
* @param Node nodeObject
* The parent DOM Element
* @param Number index
* The index for the childNode
* @param String searchPhrase
* @returns boolean
* Returns true when found the specific childNode, false otherwise
*/
async searchChildNodeIfVisible(nodeObject, index, searchPhrase) {
let result = false;
let child = nodeObject.childNodes[index];
if (
!child.hidden &&
nodeObject.getAttribute("data-hidden-from-search") !== "true"
) {
result = await this.searchWithinNode(child, searchPhrase);
// Creating tooltips for menulist element
if (result && nodeObject.tagName === "menulist") {
this.listSearchTooltips.add(nodeObject);
}
// If this is a node for an experimental feature option or a Mozilla product item,
// add it to the list of subitems. The items that don't match the search term
// will be hidden.
if (
Element.isInstance(child) &&
(child.classList.contains("featureGate") ||
child.classList.contains("mozilla-product-item"))
) {
this.subItems.set(child, result);
}
}
return result;
},
/**
* Search for a phrase in l10n messages associated with the element.
*
* @param Node nodeObject
* The parent DOM Element
* @param String searchPhrase
* @returns boolean
* true when the text content contains the query string else false
*/
async matchesSearchL10nIDs(nodeObject, searchPhrase) {
if (!this.searchKeywords.has(nodeObject)) {
// The `search-l10n-ids` attribute is a comma-separated list of
// l10n ids. It may also uses a dot notation to specify an attribute
// of the message to be used.
//
// Example: "containers-add-button.label, user-context-personal"
//
// The result is an array of arrays of l10n ids and optionally attribute names.
//
// Example: [["containers-add-button", "label"], ["user-context-personal"]]
const refs = nodeObject
.getAttribute("search-l10n-ids")
.split(",")
.map(s => s.trim().split("."))
.filter(s => !!s[0].length);
const messages = await document.l10n.formatMessages(
refs.map(ref => ({ id: ref[0] }))
);
// Map the localized messages taking value or a selected attribute and
// building a string of concatenated translated strings out of it.
let keywords = messages
.map((msg, i) => {
let [refId, refAttr] = refs[i];
if (!msg) {
console.error(`Missing search l10n id "${refId}"`);
return null;
}
if (refAttr) {
let attr =
msg.attributes && msg.attributes.find(a => a.name === refAttr);
if (!attr) {
console.error(`Missing search l10n id "${refId}.${refAttr}"`);
return null;
}
if (attr.value === "") {
console.error(
`Empty value added to search-l10n-ids "${refId}.${refAttr}"`
);
}
return attr.value;
}
if (msg.value === "") {
console.error(`Empty value added to search-l10n-ids "${refId}"`);
}
return msg.value;
})
.filter(keyword => keyword !== null)
.join(" ");
this.searchKeywords.set(nodeObject, keywords);
return this.queryMatchesContent(keywords, searchPhrase);
}
return this.queryMatchesContent(
this.searchKeywords.get(nodeObject),
searchPhrase
);
},
/**
* Inserting a div structure infront of the DOM element matched textContent.
* Then calculation the offsets to position the tooltip in the correct place.
*
* @param Node anchorNode
* DOM Element
* @param String query
* Word or words that are being searched for
*/
createSearchTooltip(anchorNode, query) {
if (anchorNode.tooltipNode) {
return;
}
let searchTooltip = anchorNode.ownerDocument.createElement("span");
let searchTooltipText = anchorNode.ownerDocument.createElement("span");
searchTooltip.className = "search-tooltip";
searchTooltipText.textContent = query;
searchTooltip.appendChild(searchTooltipText);
// Set tooltipNode property to track corresponded tooltip node.
anchorNode.tooltipNode = searchTooltip;
anchorNode.parentElement.classList.add("search-tooltip-parent");
anchorNode.parentElement.appendChild(searchTooltip);
this._applyTooltipPosition(
searchTooltip,
this._computeTooltipPosition(anchorNode, searchTooltip)
);
},
_recomputeTooltipPositions() {
let positions = [];
for (let anchorNode of this.listSearchTooltips) {
let searchTooltip = anchorNode.tooltipNode;
if (!searchTooltip) {
continue;
}
let position = this._computeTooltipPosition(anchorNode, searchTooltip);
positions.push({ searchTooltip, position });
}
for (let { searchTooltip, position } of positions) {
this._applyTooltipPosition(searchTooltip, position);
}
},
_applyTooltipPosition(searchTooltip, position) {
searchTooltip.style.left = position.left + "px";
searchTooltip.style.top = position.top + "px";
},
_computeTooltipPosition(anchorNode, searchTooltip) {
// In order to get the up-to-date position of each of the nodes that we're
// putting tooltips on, we have to flush layout intentionally. Once
// menulists don't use XUL layout we can remove this and use plain CSS to
// position them, see bug 1363730.
let anchorRect = anchorNode.getBoundingClientRect();
let containerRect = anchorNode.parentElement.getBoundingClientRect();
let tooltipRect = searchTooltip.getBoundingClientRect();
let left =
anchorRect.left -
containerRect.left +
anchorRect.width / 2 -
tooltipRect.width / 2;
let top = anchorRect.top - containerRect.top;
return { left, top };
},
/**
* Remove all search indicators. This would be called when switching away from
* a search to another preference category.
*/
removeAllSearchIndicators(window, showSubItems) {
if (this.searchResultsHighlighted) {
this.getFindSelection(window).removeAllRanges();
this.searchResultsHighlighted = false;
}
this.removeAllSearchTooltips();
this.removeAllSearchMenuitemIndicators();
// Make any previously hidden subitems visible again for the next search.
if (showSubItems && this.subItems.size) {
for (let subItem of this.subItems.keys()) {
subItem.classList.remove("visually-hidden");
}
this.subItems.clear();
}
},
/**
* Remove all search tooltips.
*/
removeAllSearchTooltips() {
for (let anchorNode of this.listSearchTooltips) {
anchorNode.parentElement.classList.remove("search-tooltip-parent");
if (anchorNode.tooltipNode) {
anchorNode.tooltipNode.remove();
}
anchorNode.tooltipNode = null;
}
this.listSearchTooltips.clear();
},
/**
* Remove all indicators on menuitem.
*/
removeAllSearchMenuitemIndicators() {
for (let node of this.listSearchMenuitemIndicators) {
node.removeAttribute("indicator");
}
this.listSearchMenuitemIndicators.clear();
},
};
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