Method onKeyDownInMode

content_scripts/link_hints.js:501–581

(event)

  // Handles all keyboard events.
  onKeyDownInMode(event) {
    if (event.repeat) return;

    // NOTE(smblott) The modifier behaviour here applies only to alphabet hints.
    if (
      ["Control", "Shift"].includes(event.key) && !Settings.get("filterLinkHints") &&
      [OPEN_IN_CURRENT_TAB, OPEN_WITH_QUEUE, OPEN_IN_NEW_BG_TAB, OPEN_IN_NEW_FG_TAB].includes(
        this.mode,
      )
    ) {
      // Toggle whether to open the link in a new or current tab.
      const previousMode = this.mode;
      const key = event.key;

      switch (key) {
        case "Shift":
          this.setOpenLinkMode(
            this.mode === OPEN_IN_CURRENT_TAB ? OPEN_IN_NEW_BG_TAB : OPEN_IN_CURRENT_TAB,
          );
          break;
        case "Control":
          this.setOpenLinkMode(
            this.mode === OPEN_IN_NEW_FG_TAB ? OPEN_IN_NEW_BG_TAB : OPEN_IN_NEW_FG_TAB,
          );
          break;
      }

      this.hintMode.push({
        keyup: (event) => {
          if (event.key === key) {
            handlerStack.remove();
            this.setOpenLinkMode(previousMode);
          }
          return true; // Continue bubbling the event.
        },
      });
    } else if (KeyboardUtils.isBackspace(event)) {
      if (this.markerMatcher.popKeyChar()) {
        this.tabCount = 0;
        this.updateVisibleMarkers();
      } else {
        // Exit via @hintMode.exit(), so that the LinkHints.activate() "onExit" callback sees the
        // key event and knows not to restart hints mode.
        this.hintMode.exit(event);
      }
    } else if (event.key === "Enter") {
      // Activate the active hint, if there is one.  Only FilterHints uses an active hint.
      if (this.markerMatcher.activeHintMarker) {
        HintCoordinator.sendMessage("activateActiveHintMarker");
      }
    } else if (event.key === "Tab") {
      if (event.shiftKey) {
        this.tabCount--;
      } else {
        this.tabCount++;
      }
      this.updateVisibleMarkers();
    } else if ((event.key === " ") && this.markerMatcher.shouldRotateHints(event)) {