Method checkClearOnEdit

core/src/components/input/input.tsx:604–639

(ev: KeyboardEvent)

  };

  private checkClearOnEdit(ev: KeyboardEvent) {
    if (!this.shouldClearOnEdit()) {
      return;
    }

    /**
     * The following keys do not modify the
     * contents of the input. As a result, pressing
     * them should not edit the input.
     *
     * We can't check to see if the value of the input
     * was changed because we call checkClearOnEdit
     * in a keydown listener, and the key has not yet
     * been added to the input.
     */
    const IGNORED_KEYS = ['Enter', 'Tab', 'Shift', 'Meta', 'Alt', 'Control'];
    const pressedIgnoredKey = IGNORED_KEYS.includes(ev.key);

    /**
     * Clear the input if the control has not been previously cleared during focus.
     * Do not clear if the user hitting enter to submit a form.
     */
    if (!this.didInputClearOnEdit && this.hasValue() && !pressedIgnoredKey) {
      this.value = '';
      this.emitInputChange(ev);
    }

    /**
     * Pressing an IGNORED_KEYS first and
     * then an allowed key will cause the input to not
     * be cleared.
     */
    if (!pressedIgnoredKey) {
      this.didInputClearOnEdit = true;
    }
  }

  private onCompositionStart = () => {
    this.isComposing = true;