MdChipsCtrl.prototype.chipKeydown = function()

in modules/closure/chips/chips.js [846:879]

• 30 lines of code
• 16 McCabe index (conditional complexity)

MdChipsCtrl.prototype.chipKeydown = function (event) {
  if (this.getChipBuffer()) return;
  if (this.isEditingChip()) return;

  switch (event.keyCode) {
    case this.$mdConstant.KEY_CODE.BACKSPACE:
    case this.$mdConstant.KEY_CODE.DELETE:
      if (this.selectedChip < 0) return;
      event.preventDefault();
      // Cancel the delete action only after the event cancel. Otherwise the page will go back.
      if (!this.isRemovable()) return;
      this.removeAndSelectAdjacentChip(this.selectedChip, event);
      break;
    case this.$mdConstant.KEY_CODE.LEFT_ARROW:
      event.preventDefault();
      // By default, allow selection of -1 which will focus the input; if we're readonly, don't go
      // below 0.
      if (this.selectedChip < 0 || (this.readonly && this.selectedChip === 0)) {
        this.selectedChip = this.items.length;
      }
      if (this.items.length) this.selectAndFocusChipSafe(this.selectedChip - 1);
      break;
    case this.$mdConstant.KEY_CODE.RIGHT_ARROW:
      event.preventDefault();
      this.selectAndFocusChipSafe(this.selectedChip + 1);
      break;
    case this.$mdConstant.KEY_CODE.ESCAPE:
    case this.$mdConstant.KEY_CODE.TAB:
      if (this.selectedChip < 0) return;
      event.preventDefault();
      this.onFocus();
      break;
  }
};