class DeleteCategoryViewController extends OnTimeViewController {
	constructor(element) {
		super(element);

		OnTime.cardManager.addEventListener("categoryremoved", this.onCategoryDeleted.bind(this));
	}

	setCategory(category) {
		this.category = category;

		this.categoryNameLabel1.innerText = category.name;
		this.categoryNameLabel2.innerText = category.name;

		//Show or hide the migration box depending on whether there are cards in the category or not.
		this.migrationBox.style.display = (Object.keys(category).length > 0 ? "" : "none");

		//Remove all but the first option of the category dropdown.
		for (var i = this.categoryDropdown.children.length - 1; i > 0; i--) {
			this.categoryDropdown.removeChild(this.categoryDropdown.children[i]);
		}

		//Add the names of the other categories to the migration dropdown.
		for (var categoryKey in OnTime.cardManager.categories) {
			if (categoryKey != category.category_key) {
				var optionElement = document.createElement("OPTION");
				optionElement.value = categoryKey;
				optionElement.innerText = "Move to \"" + OnTime.cardManager.categories[categoryKey].name + "\"";
				this.categoryDropdown.appendChild(optionElement);
			}
		}
	}

	onCancelButtonPressed(event) {
		this.dismissModally();
	}

	onDeleteButtonPressed(event) {
		this.deleteButton.disabled = true;
		OnTime.cardManager.deleteCategory(this.category.category_key, this.categoryDropdown.value);
	}

	onCategoryDeleted(event) {
		this.deleteButton.disabled = false;
		this.dismissModally();
	}
}

UIKit.registerViewControllerType(DeleteCategoryViewController);