Adding upstream version 115.7.0esr.upstream/115.7.0esr

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

1 files changed, 1021 insertions, 0 deletions

diff --git a/browser/components/search/content/contentSearchUI.js b/browser/components/search/content/contentSearchUI.js
new file mode 100644
index 0000000000..9c7387d364
--- /dev/null
+++ b/browser/components/search/content/contentSearchUI.js
@@ -0,0 +1,1021 @@
+/* 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/. */
+
+"use strict";
+
+this.ContentSearchUIController = (function () {
+  const MAX_DISPLAYED_SUGGESTIONS = 6;
+  const SUGGESTION_ID_PREFIX = "searchSuggestion";
+  const ONE_OFF_ID_PREFIX = "oneOff";
+  const HTML_NS = "http://www.w3.org/1999/xhtml";
+
+  /**
+   * Creates a new object that manages search suggestions and their UI for a text
+   * box.
+   *
+   * The UI consists of an html:table that's inserted into the DOM after the given
+   * text box and styled so that it appears as a dropdown below the text box.
+   *
+   * @param {DOMElement} inputElement
+   *        Search suggestions will be based on the text in this text box.
+   *        Assumed to be an html:input.
+   * @param {DOMElement} tableParent
+   *        The suggestion table is appended as a child to this element.  Since
+   *        the table is absolutely positioned and its top and left values are set
+   *        to be relative to the top and left of the page, either the parent and
+   *        all its ancestors should not be positioned elements (i.e., their
+   *        positions should be "static"), or the parent's position should be the
+   *        top left of the page.
+   * @param {string} healthReportKey
+   *        This will be sent with the search data for BrowserUsageTelemetry to
+   *        record the search.
+   * @param {string} searchPurpose
+   *        Sent with search data, see nsISearchEngine.getSubmission.
+   * @param {sring} idPrefix
+   *        The IDs of elements created by the object will be prefixed with this
+   *        string.
+   */
+  function ContentSearchUIController(
+    inputElement,
+    tableParent,
+    healthReportKey,
+    searchPurpose,
+    idPrefix = ""
+  ) {
+    this.input = inputElement;
+    this._idPrefix = idPrefix;
+    this._healthReportKey = healthReportKey;
+    this._searchPurpose = searchPurpose;
+    this._isPrivateEngine = false;
+
+    let tableID = idPrefix + "searchSuggestionTable";
+    this.input.autocomplete = "off";
+    this.input.setAttribute("aria-autocomplete", "true");
+    this.input.setAttribute("aria-controls", tableID);
+    tableParent.appendChild(this._makeTable(tableID));
+
+    this.input.addEventListener("keydown", this);
+    this.input.addEventListener("input", this);
+    this.input.addEventListener("focus", this);
+    this.input.addEventListener("blur", this);
+    window.addEventListener("ContentSearchService", this);
+
+    this._stickyInputValue = "";
+    this._hideSuggestions();
+
+    this._getSearchEngines();
+    this._getStrings();
+  }
+
+  ContentSearchUIController.prototype = {
+    _oneOffButtons: [],
+    // Setting up the one off buttons causes an uninterruptible reflow. If we
+    // receive the list of engines while the newtab page is loading, this reflow
+    // may regress performance - so we set this flag and only set up the buttons
+    // if it's set when the suggestions table is actually opened.
+    _pendingOneOffRefresh: undefined,
+
+    get defaultEngine() {
+      return this._defaultEngine;
+    },
+
+    set defaultEngine(engine) {
+      if (this._defaultEngine && this._defaultEngine.icon) {
+        URL.revokeObjectURL(this._defaultEngine.icon);
+      }
+      let icon;
+      if (engine.iconData) {
+        icon = this._getFaviconURIFromIconData(engine.iconData);
+      } else {
+        icon = "chrome://global/skin/icons/defaultFavicon.svg";
+      }
+      this._defaultEngine = {
+        name: engine.name,
+        icon,
+        isAppProvided: engine.isAppProvided,
+      };
+      this._updateDefaultEngineHeader();
+      this._updateDefaultEngineIcon();
+
+      if (engine && document.activeElement == this.input) {
+        this._speculativeConnect();
+      }
+    },
+
+    get engines() {
+      return this._engines;
+    },
+
+    set engines(val) {
+      this._engines = val;
+      this._pendingOneOffRefresh = true;
+    },
+
+    // The selectedIndex is the index of the element with the "selected" class in
+    // the list obtained by concatenating the suggestion rows, one-off buttons, and
+    // search settings button.
+    get selectedIndex() {
+      let allElts = [
+        ...this._suggestionsList.children,
+        ...this._oneOffButtons,
+        document.getElementById("contentSearchSettingsButton"),
+      ];
+      for (let i = 0; i < allElts.length; ++i) {
+        let elt = allElts[i];
+        if (elt.classList.contains("selected")) {
+          return i;
+        }
+      }
+      return -1;
+    },
+
+    set selectedIndex(idx) {
+      // Update the table's rows, and the input when there is a selection.
+      this._table.removeAttribute("aria-activedescendant");
+      this.input.removeAttribute("aria-activedescendant");
+
+      let allElts = [
+        ...this._suggestionsList.children,
+        ...this._oneOffButtons,
+        document.getElementById("contentSearchSettingsButton"),
+      ];
+      // If we are selecting a suggestion and a one-off is selected, don't deselect it.
+      let excludeIndex =
+        idx < this.numSuggestions && this.selectedButtonIndex > -1
+          ? this.numSuggestions + this.selectedButtonIndex
+          : -1;
+      for (let i = 0; i < allElts.length; ++i) {
+        let elt = allElts[i];
+        let ariaSelectedElt = i < this.numSuggestions ? elt.firstChild : elt;
+        if (i == idx) {
+          elt.classList.add("selected");
+          ariaSelectedElt.setAttribute("aria-selected", "true");
+          this.input.setAttribute("aria-activedescendant", ariaSelectedElt.id);
+        } else if (i != excludeIndex) {
+          elt.classList.remove("selected");
+          ariaSelectedElt.setAttribute("aria-selected", "false");
+        }
+      }
+    },
+
+    get selectedButtonIndex() {
+      let elts = [
+        ...this._oneOffButtons,
+        document.getElementById("contentSearchSettingsButton"),
+      ];
+      for (let i = 0; i < elts.length; ++i) {
+        if (elts[i].classList.contains("selected")) {
+          return i;
+        }
+      }
+      return -1;
+    },
+
+    set selectedButtonIndex(idx) {
+      let elts = [
+        ...this._oneOffButtons,
+        document.getElementById("contentSearchSettingsButton"),
+      ];
+      for (let i = 0; i < elts.length; ++i) {
+        let elt = elts[i];
+        if (i == idx) {
+          elt.classList.add("selected");
+          elt.setAttribute("aria-selected", "true");
+        } else {
+          elt.classList.remove("selected");
+          elt.setAttribute("aria-selected", "false");
+        }
+      }
+    },
+
+    get selectedEngineName() {
+      let selectedElt = this._oneOffsTable.querySelector(".selected");
+      if (selectedElt) {
+        return selectedElt.engineName;
+      }
+      return this.defaultEngine.name;
+    },
+
+    get numSuggestions() {
+      return this._suggestionsList.children.length;
+    },
+
+    selectAndUpdateInput(idx) {
+      this.selectedIndex = idx;
+      let newValue = this.suggestionAtIndex(idx) || this._stickyInputValue;
+      // Setting the input value when the value has not changed commits the current
+      // IME composition, which we don't want to do.
+      if (this.input.value != newValue) {
+        this.input.value = newValue;
+      }
+      this._updateSearchWithHeader();
+    },
+
+    suggestionAtIndex(idx) {
+      let row = this._suggestionsList.children[idx];
+      return row ? row.textContent : null;
+    },
+
+    deleteSuggestionAtIndex(idx) {
+      // Only form history suggestions can be deleted.
+      if (this.isFormHistorySuggestionAtIndex(idx)) {
+        let suggestionStr = this.suggestionAtIndex(idx);
+        this._sendMsg("RemoveFormHistoryEntry", suggestionStr);
+        this._suggestionsList.children[idx].remove();
+        this.selectAndUpdateInput(-1);
+      }
+    },
+
+    isFormHistorySuggestionAtIndex(idx) {
+      let row = this._suggestionsList.children[idx];
+      return row && row.classList.contains("formHistory");
+    },
+
+    addInputValueToFormHistory() {
+      let entry = {
+        value: this.input.value,
+        engineName: this.selectedEngineName,
+      };
+      this._sendMsg("AddFormHistoryEntry", entry);
+      return entry;
+    },
+
+    handleEvent(event) {
+      // The event handler is triggered by external events while the search
+      // element may no longer be present
+      if (!document.contains(this.input)) {
+        return;
+      }
+      this["_on" + event.type[0].toUpperCase() + event.type.substr(1)](event);
+    },
+
+    _onCommand(aEvent) {
+      if (this.selectedButtonIndex == this._oneOffButtons.length) {
+        // Settings button was selected.
+        this._sendMsg("ManageEngines");
+        return;
+      }
+
+      this.search(aEvent);
+
+      if (aEvent) {
+        aEvent.preventDefault();
+      }
+    },
+
+    search(aEvent) {
+      if (!this.defaultEngine) {
+        return; // Not initialized yet.
+      }
+
+      let searchText = this.input;
+      let searchTerms;
+      if (
+        this._table.hidden ||
+        (aEvent.originalTarget &&
+          aEvent.originalTarget.id == "contentSearchDefaultEngineHeader") ||
+        aEvent instanceof KeyboardEvent
+      ) {
+        searchTerms = searchText.value;
+      } else {
+        searchTerms =
+          this.suggestionAtIndex(this.selectedIndex) || searchText.value;
+      }
+      // Send an event that will perform a search and Firefox Health Report will
+      // record that a search from the healthReportKey passed to the constructor.
+      let eventData = {
+        engineName: this.selectedEngineName,
+        searchString: searchTerms,
+        healthReportKey: this._healthReportKey,
+        searchPurpose: this._searchPurpose,
+        originalEvent: {
+          shiftKey: aEvent.shiftKey,
+          ctrlKey: aEvent.ctrlKey,
+          metaKey: aEvent.metaKey,
+          altKey: aEvent.altKey,
+        },
+      };
+      if ("button" in aEvent) {
+        eventData.originalEvent.button = aEvent.button;
+      }
+
+      if (this.suggestionAtIndex(this.selectedIndex)) {
+        eventData.selection = {
+          index: this.selectedIndex,
+          kind: undefined,
+        };
+        if (aEvent instanceof MouseEvent) {
+          eventData.selection.kind = "mouse";
+        } else if (aEvent instanceof KeyboardEvent) {
+          eventData.selection.kind = "key";
+        }
+      }
+
+      this._sendMsg("Search", eventData);
+      this.addInputValueToFormHistory();
+    },
+
+    _onInput() {
+      if (!this.input.value) {
+        this._stickyInputValue = "";
+        this._hideSuggestions();
+      } else if (this.input.value != this._stickyInputValue) {
+        // Only fetch new suggestions if the input value has changed.
+        this._getSuggestions();
+        this.selectAndUpdateInput(-1);
+      }
+      this._updateSearchWithHeader();
+    },
+
+    _onKeydown(event) {
+      let selectedIndexDelta = 0;
+      let selectedSuggestionDelta = 0;
+      let selectedOneOffDelta = 0;
+
+      switch (event.keyCode) {
+        case event.DOM_VK_UP:
+          if (this._table.hidden) {
+            return;
+          }
+          if (event.getModifierState("Accel")) {
+            if (event.shiftKey) {
+              selectedSuggestionDelta = -1;
+              break;
+            }
+            this._cycleCurrentEngine(true);
+            break;
+          }
+          if (event.altKey) {
+            selectedOneOffDelta = -1;
+            break;
+          }
+          selectedIndexDelta = -1;
+          break;
+        case event.DOM_VK_DOWN:
+          if (this._table.hidden) {
+            this._getSuggestions();
+            return;
+          }
+          if (event.getModifierState("Accel")) {
+            if (event.shiftKey) {
+              selectedSuggestionDelta = 1;
+              break;
+            }
+            this._cycleCurrentEngine(false);
+            break;
+          }
+          if (event.altKey) {
+            selectedOneOffDelta = 1;
+            break;
+          }
+          selectedIndexDelta = 1;
+          break;
+        case event.DOM_VK_TAB:
+          if (this._table.hidden) {
+            return;
+          }
+          // Shift+tab when either the first or no one-off is selected, as well as
+          // tab when the settings button is selected, should change focus as normal.
+          if (
+            (this.selectedButtonIndex <= 0 && event.shiftKey) ||
+            (this.selectedButtonIndex == this._oneOffButtons.length &&
+              !event.shiftKey)
+          ) {
+            return;
+          }
+          selectedOneOffDelta = event.shiftKey ? -1 : 1;
+          break;
+        case event.DOM_VK_RIGHT:
+          // Allow normal caret movement until the caret is at the end of the input.
+          if (
+            this.input.selectionStart != this.input.selectionEnd ||
+            this.input.selectionEnd != this.input.value.length
+          ) {
+            return;
+          }
+          if (
+            this.numSuggestions &&
+            this.selectedIndex >= 0 &&
+            this.selectedIndex < this.numSuggestions
+          ) {
+            this.input.value = this.suggestionAtIndex(this.selectedIndex);
+            this.input.setAttribute("selection-index", this.selectedIndex);
+            this.input.setAttribute("selection-kind", "key");
+          } else {
+            // If we didn't select anything, make sure to remove the attributes
+            // in case they were populated last time.
+            this.input.removeAttribute("selection-index");
+            this.input.removeAttribute("selection-kind");
+          }
+          this._stickyInputValue = this.input.value;
+          this._hideSuggestions();
+          return;
+        case event.DOM_VK_RETURN:
+          this._onCommand(event);
+          return;
+        case event.DOM_VK_DELETE:
+          if (this.selectedIndex >= 0) {
+            this.deleteSuggestionAtIndex(this.selectedIndex);
+          }
+          return;
+        case event.DOM_VK_ESCAPE:
+          if (!this._table.hidden) {
+            this._hideSuggestions();
+          }
+          return;
+        default:
+          return;
+      }
+
+      let currentIndex = this.selectedIndex;
+      if (selectedIndexDelta) {
+        let newSelectedIndex = currentIndex + selectedIndexDelta;
+        if (newSelectedIndex < -1) {
+          newSelectedIndex = this.numSuggestions + this._oneOffButtons.length;
+        }
+        // If are moving up from the first one off, we have to deselect the one off
+        // manually because the selectedIndex setter tries to exclude the selected
+        // one-off (which is desirable for accel+shift+up/down).
+        if (currentIndex == this.numSuggestions && selectedIndexDelta == -1) {
+          this.selectedButtonIndex = -1;
+        }
+        this.selectAndUpdateInput(newSelectedIndex);
+      } else if (selectedSuggestionDelta) {
+        let newSelectedIndex;
+        if (currentIndex >= this.numSuggestions || currentIndex == -1) {
+          // No suggestion already selected, select the first/last one appropriately.
+          newSelectedIndex =
+            selectedSuggestionDelta == 1 ? 0 : this.numSuggestions - 1;
+        } else {
+          newSelectedIndex = currentIndex + selectedSuggestionDelta;
+        }
+        if (newSelectedIndex >= this.numSuggestions) {
+          newSelectedIndex = -1;
+        }
+        this.selectAndUpdateInput(newSelectedIndex);
+      } else if (selectedOneOffDelta) {
+        let newSelectedIndex;
+        let currentButton = this.selectedButtonIndex;
+        if (
+          currentButton == -1 ||
+          currentButton == this._oneOffButtons.length
+        ) {
+          // No one-off already selected, select the first/last one appropriately.
+          newSelectedIndex =
+            selectedOneOffDelta == 1 ? 0 : this._oneOffButtons.length - 1;
+        } else {
+          newSelectedIndex = currentButton + selectedOneOffDelta;
+        }
+        // Allow selection of the settings button via the tab key.
+        if (
+          newSelectedIndex == this._oneOffButtons.length &&
+          event.keyCode != event.DOM_VK_TAB
+        ) {
+          newSelectedIndex = -1;
+        }
+        this.selectedButtonIndex = newSelectedIndex;
+      }
+
+      // Prevent the input's caret from moving.
+      event.preventDefault();
+    },
+
+    _currentEngineIndex: -1,
+    _cycleCurrentEngine(aReverse) {
+      if (
+        (this._currentEngineIndex == this._engines.length - 1 && !aReverse) ||
+        (this._currentEngineIndex == 0 && aReverse)
+      ) {
+        return;
+      }
+      this._currentEngineIndex += aReverse ? -1 : 1;
+      let engineName = this._engines[this._currentEngineIndex].name;
+      this._sendMsg("SetCurrentEngine", engineName);
+    },
+
+    _onFocus() {
+      if (this._mousedown) {
+        return;
+      }
+      // When the input box loses focus to something in our table, we refocus it
+      // immediately. This causes the focus highlight to flicker, so we set a
+      // custom attribute which consumers should use for focus highlighting. This
+      // attribute is removed only when we do not immediately refocus the input
+      // box, thus eliminating flicker.
+      this.input.setAttribute("keepfocus", "true");
+      this._speculativeConnect();
+    },
+
+    _onBlur() {
+      if (this._mousedown) {
+        // At this point, this.input has lost focus, but a new element has not yet
+        // received it. If we re-focus this.input directly, the new element will
+        // steal focus immediately, so we queue it instead.
+        setTimeout(() => this.input.focus(), 0);
+        return;
+      }
+      this.input.removeAttribute("keepfocus");
+      this._hideSuggestions();
+    },
+
+    _onMousemove(event) {
+      let idx = this._indexOfTableItem(event.target);
+      if (idx >= this.numSuggestions) {
+        // Deselect any search suggestion that has been selected.
+        this.selectedIndex = -1;
+        this.selectedButtonIndex = idx - this.numSuggestions;
+        return;
+      }
+      this.selectedIndex = idx;
+    },
+
+    _onMouseup(event) {
+      if (event.button == 2) {
+        return;
+      }
+      this._onCommand(event);
+    },
+
+    _onMouseout(event) {
+      // We only deselect one-off buttons and the settings button when they are
+      // moused out.
+      let idx = this._indexOfTableItem(event.originalTarget);
+      if (idx >= this.numSuggestions) {
+        this.selectedButtonIndex = -1;
+      }
+    },
+
+    _onClick(event) {
+      this._onMouseup(event);
+    },
+
+    _onContentSearchService(event) {
+      let methodName = "_onMsg" + event.detail.type;
+      if (methodName in this) {
+        this[methodName](event.detail.data);
+      }
+    },
+
+    _onMsgFocusInput(event) {
+      this.input.focus();
+    },
+
+    _onMsgBlur(event) {
+      this.input.blur();
+      this._hideSuggestions();
+    },
+
+    _onMsgSuggestions(suggestions) {
+      // Ignore the suggestions if their search string or engine doesn't match
+      // ours.  Due to the async nature of message passing, this can easily happen
+      // when the user types quickly.
+      if (
+        this._stickyInputValue != suggestions.searchString ||
+        this.defaultEngine.name != suggestions.engineName
+      ) {
+        return;
+      }
+
+      this._clearSuggestionRows();
+
+      // Position and size the table.
+      let { left } = this.input.getBoundingClientRect();
+      this._table.style.top = this.input.offsetHeight + "px";
+      this._table.style.minWidth = this.input.offsetWidth + "px";
+      this._table.style.maxWidth = window.innerWidth - left - 40 + "px";
+
+      // Add the suggestions to the table.
+      let searchWords = new Set(
+        suggestions.searchString.trim().toLowerCase().split(/\s+/)
+      );
+      for (let i = 0; i < MAX_DISPLAYED_SUGGESTIONS; i++) {
+        let type, idx;
+        if (i < suggestions.formHistory.length) {
+          [type, idx] = ["formHistory", i];
+        } else {
+          let j = i - suggestions.formHistory.length;
+          if (j < suggestions.remote.length) {
+            [type, idx] = ["remote", j];
+          } else {
+            break;
+          }
+        }
+        this._suggestionsList.appendChild(
+          this._makeTableRow(type, suggestions[type][idx], i, searchWords)
+        );
+      }
+
+      if (this._table.hidden) {
+        this.selectedIndex = -1;
+        if (this._pendingOneOffRefresh) {
+          this._setUpOneOffButtons();
+          delete this._pendingOneOffRefresh;
+        }
+        this._currentEngineIndex = this._engines.findIndex(
+          aEngine => aEngine.name == this.defaultEngine.name
+        );
+        this._table.hidden = false;
+        this.input.setAttribute("aria-expanded", "true");
+      }
+    },
+
+    _onMsgSuggestionsCancelled() {
+      if (!this._table.hidden) {
+        this._hideSuggestions();
+      }
+    },
+
+    _onMsgState(state) {
+      // Not all state messages broadcast the windows' privateness info.
+      if ("isPrivateWindow" in state) {
+        this._isPrivateEngine = state.isPrivateEngine;
+      }
+
+      this.engines = state.engines;
+
+      let currentEngine = state.currentEngine;
+      if (this._isPrivateEngine) {
+        currentEngine = state.currentPrivateEngine;
+      }
+
+      // No point updating the default engine (and the header) if there's no change.
+      if (
+        this.defaultEngine &&
+        this.defaultEngine.name == currentEngine.name &&
+        this.defaultEngine.icon == currentEngine.icon
+      ) {
+        return;
+      }
+      this.defaultEngine = currentEngine;
+    },
+
+    _onMsgCurrentState(state) {
+      this._onMsgState(state);
+    },
+
+    _onMsgCurrentEngine(engine) {
+      if (this._isPrivateEngine) {
+        return;
+      }
+      this.defaultEngine = engine;
+      this._pendingOneOffRefresh = true;
+    },
+
+    _onMsgCurrentPrivateEngine(engine) {
+      if (!this._isPrivateEngine) {
+        return;
+      }
+      this.defaultEngine = engine;
+      this._pendingOneOffRefresh = true;
+    },
+
+    _onMsgStrings(strings) {
+      this._strings = strings;
+      this._updateDefaultEngineHeader();
+      this._updateSearchWithHeader();
+      document.getElementById("contentSearchSettingsButton").textContent =
+        this._strings.searchSettings;
+    },
+
+    _updateDefaultEngineIcon() {
+      // We only show the engine's own icon for app provided engines, otherwise show
+      // a default. xref https://bugzilla.mozilla.org/show_bug.cgi?id=1449338#c19
+      let icon = this.defaultEngine.isAppProvided
+        ? this.defaultEngine.icon
+        : "chrome://global/skin/icons/search-glass.svg";
+
+      document.body.style.setProperty(
+        "--newtab-search-icon",
+        "url(" + icon + ")"
+      );
+    },
+
+    _updateDefaultEngineHeader() {
+      let header = document.getElementById("contentSearchDefaultEngineHeader");
+      header.firstChild.setAttribute("src", this.defaultEngine.icon);
+      if (!this._strings) {
+        return;
+      }
+      while (header.firstChild.nextSibling) {
+        header.firstChild.nextSibling.remove();
+      }
+      header.appendChild(
+        document.createTextNode(
+          this._strings.searchHeader.replace("%S", this.defaultEngine.name)
+        )
+      );
+    },
+
+    _updateSearchWithHeader() {
+      if (!this._strings) {
+        return;
+      }
+      let searchWithHeader = document.getElementById(
+        "contentSearchSearchWithHeader"
+      );
+      let labels = searchWithHeader.querySelectorAll("label");
+      if (this.input.value) {
+        let header = this._strings.searchForSomethingWith2;
+        // Translators can use both %S and %1$S.
+        header = header.replace("%1$S", "%S").split("%S");
+        labels[0].textContent = header[0];
+        labels[1].textContent = this.input.value;
+        labels[2].textContent = header[1];
+      } else {
+        labels[0].textContent = this._strings.searchWithHeader;
+        labels[1].textContent = "";
+        labels[2].textContent = "";
+      }
+    },
+
+    _speculativeConnect() {
+      if (this.defaultEngine) {
+        this._sendMsg("SpeculativeConnect", this.defaultEngine.name);
+      }
+    },
+
+    _makeTableRow(type, suggestionStr, currentRow, searchWords) {
+      let row = document.createElementNS(HTML_NS, "tr");
+      row.dir = "auto";
+      row.classList.add("contentSearchSuggestionRow");
+      row.classList.add(type);
+      row.setAttribute("role", "presentation");
+      row.addEventListener("mousemove", this);
+      row.addEventListener("mouseup", this);
+
+      let entry = document.createElementNS(HTML_NS, "td");
+      let img = document.createElementNS(HTML_NS, "div");
+      img.setAttribute("class", "historyIcon");
+      entry.appendChild(img);
+      entry.classList.add("contentSearchSuggestionEntry");
+      entry.setAttribute("role", "option");
+      entry.id = this._idPrefix + SUGGESTION_ID_PREFIX + currentRow;
+      entry.setAttribute("aria-selected", "false");
+
+      let suggestionWords = suggestionStr.trim().toLowerCase().split(/\s+/);
+      for (let i = 0; i < suggestionWords.length; i++) {
+        let word = suggestionWords[i];
+        let wordSpan = document.createElementNS(HTML_NS, "span");
+        if (searchWords.has(word)) {
+          wordSpan.classList.add("typed");
+        }
+        wordSpan.textContent = word;
+        entry.appendChild(wordSpan);
+        if (i < suggestionWords.length - 1) {
+          entry.appendChild(document.createTextNode(" "));
+        }
+      }
+
+      row.appendChild(entry);
+      return row;
+    },
+
+    // If the favicon is an array buffer, convert it into a Blob URI.
+    // Otherwise just return the plain URI.
+    _getFaviconURIFromIconData(data) {
+      if (typeof data == "string") {
+        return data;
+      }
+
+      // If typeof(data) != "string", we assume it's an ArrayBuffer
+      let blob = new Blob([data]);
+      return URL.createObjectURL(blob);
+    },
+
+    // Adds "@2x" to the name of the given PNG url for "retina" screens.
+    _getImageURIForCurrentResolution(uri) {
+      if (window.devicePixelRatio > 1) {
+        return uri.replace(/\.png$/, "@2x.png");
+      }
+      return uri;
+    },
+
+    _getSearchEngines() {
+      this._sendMsg("GetState");
+    },
+
+    _getStrings() {
+      this._sendMsg("GetStrings");
+    },
+
+    _getSuggestions() {
+      this._stickyInputValue = this.input.value;
+      if (this.defaultEngine) {
+        this._sendMsg("GetSuggestions", {
+          engineName: this.defaultEngine.name,
+          searchString: this.input.value,
+        });
+      }
+    },
+
+    _clearSuggestionRows() {
+      while (this._suggestionsList.firstElementChild) {
+        this._suggestionsList.firstElementChild.remove();
+      }
+    },
+
+    _hideSuggestions() {
+      this.input.setAttribute("aria-expanded", "false");
+      this.selectedIndex = -1;
+      this.selectedButtonIndex = -1;
+      this._currentEngineIndex = -1;
+      this._table.hidden = true;
+    },
+
+    _indexOfTableItem(elt) {
+      if (elt.classList.contains("contentSearchOneOffItem")) {
+        return this.numSuggestions + this._oneOffButtons.indexOf(elt);
+      }
+      if (elt.classList.contains("contentSearchSettingsButton")) {
+        return this.numSuggestions + this._oneOffButtons.length;
+      }
+      while (elt && elt.localName != "tr") {
+        elt = elt.parentNode;
+      }
+      if (!elt) {
+        throw new Error("Element is not a row");
+      }
+      return elt.rowIndex;
+    },
+
+    _makeTable(id) {
+      this._table = document.createElementNS(HTML_NS, "table");
+      this._table.id = id;
+      this._table.hidden = true;
+      this._table.classList.add("contentSearchSuggestionTable");
+      this._table.setAttribute("role", "presentation");
+
+      // When the search input box loses focus, we want to immediately give focus
+      // back to it if the blur was because the user clicked somewhere in the table.
+      // onBlur uses the _mousedown flag to detect this.
+      this._table.addEventListener("mousedown", () => {
+        this._mousedown = true;
+      });
+      document.addEventListener("mouseup", () => {
+        delete this._mousedown;
+      });
+
+      // Deselect the selected element on mouseout if it wasn't a suggestion.
+      this._table.addEventListener("mouseout", this);
+
+      let headerRow = document.createElementNS(HTML_NS, "tr");
+      let header = document.createElementNS(HTML_NS, "td");
+      headerRow.setAttribute("class", "contentSearchHeaderRow");
+      header.setAttribute("class", "contentSearchHeader");
+      let iconImg = document.createElementNS(HTML_NS, "img");
+      header.appendChild(iconImg);
+      header.id = "contentSearchDefaultEngineHeader";
+      headerRow.appendChild(header);
+      headerRow.addEventListener("click", this);
+      this._table.appendChild(headerRow);
+
+      let row = document.createElementNS(HTML_NS, "tr");
+      row.setAttribute("class", "contentSearchSuggestionsContainer");
+      let cell = document.createElementNS(HTML_NS, "td");
+      cell.setAttribute("class", "contentSearchSuggestionsContainer");
+      this._suggestionsList = document.createElementNS(HTML_NS, "table");
+      this._suggestionsList.setAttribute(
+        "class",
+        "contentSearchSuggestionsList"
+      );
+      cell.appendChild(this._suggestionsList);
+      row.appendChild(cell);
+      this._table.appendChild(row);
+      this._suggestionsList.setAttribute("role", "listbox");
+
+      this._oneOffsTable = document.createElementNS(HTML_NS, "table");
+      this._oneOffsTable.setAttribute("class", "contentSearchOneOffsTable");
+      this._oneOffsTable.classList.add("contentSearchSuggestionsContainer");
+      this._oneOffsTable.setAttribute("role", "group");
+      this._table.appendChild(this._oneOffsTable);
+
+      headerRow = document.createElementNS(HTML_NS, "tr");
+      header = document.createElementNS(HTML_NS, "td");
+      headerRow.setAttribute("class", "contentSearchHeaderRow");
+      header.setAttribute("class", "contentSearchHeader");
+      headerRow.appendChild(header);
+      header.id = "contentSearchSearchWithHeader";
+      let start = document.createElement("label");
+      let inputLabel = document.createElement("label");
+      inputLabel.setAttribute(
+        "class",
+        "contentSearchSearchWithHeaderSearchText"
+      );
+      let end = document.createElement("label");
+      header.appendChild(start);
+      header.appendChild(inputLabel);
+      header.appendChild(end);
+      this._oneOffsTable.appendChild(headerRow);
+
+      let button = document.createElementNS(HTML_NS, "button");
+      button.setAttribute("class", "contentSearchSettingsButton");
+      button.classList.add("contentSearchHeaderRow");
+      button.classList.add("contentSearchHeader");
+      button.id = "contentSearchSettingsButton";
+      button.addEventListener("click", this);
+      button.addEventListener("mousemove", this);
+      this._table.appendChild(button);
+
+      return this._table;
+    },
+
+    _setUpOneOffButtons() {
+      // Sometimes we receive a CurrentEngine message from the ContentSearch service
+      // before we've received a State message - i.e. before we have our engines.
+      if (!this._engines) {
+        return;
+      }
+
+      while (this._oneOffsTable.firstChild.nextSibling) {
+        this._oneOffsTable.firstChild.nextSibling.remove();
+      }
+
+      this._oneOffButtons = [];
+
+      let engines = this._engines
+        .filter(aEngine => aEngine.name != this.defaultEngine.name)
+        .filter(aEngine => !aEngine.hidden);
+      if (!engines.length) {
+        this._oneOffsTable.hidden = true;
+        return;
+      }
+
+      const kDefaultButtonWidth = 49; // 48px + 1px border.
+      let rowWidth = this.input.offsetWidth - 2; // 2px border.
+      let enginesPerRow = Math.floor(rowWidth / kDefaultButtonWidth);
+      let buttonWidth = Math.floor(rowWidth / enginesPerRow);
+
+      let row = document.createElementNS(HTML_NS, "tr");
+      let cell = document.createElementNS(HTML_NS, "td");
+      row.setAttribute("class", "contentSearchSuggestionsContainer");
+      cell.setAttribute("class", "contentSearchSuggestionsContainer");
+
+      for (let i = 0; i < engines.length; ++i) {
+        let engine = engines[i];
+        if (i > 0 && i % enginesPerRow == 0) {
+          row.appendChild(cell);
+          this._oneOffsTable.appendChild(row);
+          row = document.createElementNS(HTML_NS, "tr");
+          cell = document.createElementNS(HTML_NS, "td");
+          row.setAttribute("class", "contentSearchSuggestionsContainer");
+          cell.setAttribute("class", "contentSearchSuggestionsContainer");
+        }
+        let button = document.createElementNS(HTML_NS, "button");
+        button.setAttribute("class", "contentSearchOneOffItem");
+        let img = document.createElementNS(HTML_NS, "img");
+        let uri;
+        if (engine.iconData) {
+          uri = this._getFaviconURIFromIconData(engine.iconData);
+        } else {
+          uri = this._getImageURIForCurrentResolution(
+            "chrome://browser/skin/search-engine-placeholder.png"
+          );
+        }
+        img.setAttribute("src", uri);
+        img.addEventListener(
+          "load",
+          function () {
+            URL.revokeObjectURL(uri);
+          },
+          { once: true }
+        );
+        button.appendChild(img);
+        button.style.width = buttonWidth + "px";
+        button.setAttribute("engine-name", engine.name);
+
+        button.engineName = engine.name;
+        button.addEventListener("click", this);
+        button.addEventListener("mousemove", this);
+
+        if (engines.length - i <= enginesPerRow - (i % enginesPerRow)) {
+          button.classList.add("last-row");
+        }
+
+        if ((i + 1) % enginesPerRow == 0) {
+          button.classList.add("end-of-row");
+        }
+
+        button.id = ONE_OFF_ID_PREFIX + i;
+        cell.appendChild(button);
+        this._oneOffButtons.push(button);
+      }
+      row.appendChild(cell);
+      this._oneOffsTable.appendChild(row);
+      this._oneOffsTable.hidden = false;
+    },
+
+    _sendMsg(type, data = null) {
+      dispatchEvent(
+        new CustomEvent("ContentSearchClient", {
+          detail: {
+            type,
+            data,
+          },
+        })
+      );
+    },
+  };
+
+  return ContentSearchUIController;
+})();