Method _handleHover

src/material/menu/menu-trigger.ts:208–226

Handles the cases where the user hovers over the trigger.

()

  /** Handles the cases where the user hovers over the trigger. */
  private _handleHover() {
    // Subscribe to changes in the hovered item in order to toggle the panel.
    if (this.triggersSubmenu() && this._parentMaterialMenu) {
      this._hoverSubscription = this._parentMaterialMenu._hovered().subscribe(active => {
        if (
          active === this._menuItemInstance &&
          !active.disabled &&
          // Ignore hover events if the parent menu is in the process of being closed (see #31956).
          this._parentMaterialMenu?._panelAnimationState !== 'void'
        ) {
          this._openedBy = 'mouse';
          // Open the menu, but do NOT auto-focus on first item when just hovering.
          // When VoiceOver is enabled, this is particularly confusing as the focus will
          // cause another hover event, and continue opening sub-menus without interaction.
          this._openMenu(false);
        }
      });
    }
  }
}