/**
 * DevExtreme (ui/list/ui.list.edit.decorator.switchable.js)
 * Version: 19.2.5 (build 19359-1956)
 * Build date: Wed Dec 25 2019
 *
 * Copyright (c) 2012 - 2019 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */
"use strict";
var $ = require("../../core/renderer"),
    eventsEngine = require("../../events/core/events_engine"),
    noop = require("../../core/utils/common").noop,
    EditDecorator = require("./ui.list.edit.decorator"),
    abstract = EditDecorator.abstract,
    eventUtils = require("../../events/utils"),
    pointerEvents = require("../../events/pointer"),
    feedbackEvents = require("../../events/core/emitter.feedback");
var LIST_EDIT_DECORATOR = "dxListEditDecorator",
    POINTER_DOWN_EVENT_NAME = eventUtils.addNamespace(pointerEvents.down, LIST_EDIT_DECORATOR),
    ACTIVE_EVENT_NAME = eventUtils.addNamespace(feedbackEvents.active, LIST_EDIT_DECORATOR),
    LIST_ITEM_CONTENT_CLASS = "dx-list-item-content",
    SWITCHABLE_DELETE_READY_CLASS = "dx-list-switchable-delete-ready",
    SWITCHABLE_MENU_SHIELD_POSITIONING_CLASS = "dx-list-switchable-menu-shield-positioning",
    SWITCHABLE_DELETE_TOP_SHIELD_CLASS = "dx-list-switchable-delete-top-shield",
    SWITCHABLE_DELETE_BOTTOM_SHIELD_CLASS = "dx-list-switchable-delete-bottom-shield",
    SWITCHABLE_MENU_ITEM_SHIELD_POSITIONING_CLASS = "dx-list-switchable-menu-item-shield-positioning",
    SWITCHABLE_DELETE_ITEM_CONTENT_SHIELD_CLASS = "dx-list-switchable-delete-item-content-shield",
    SWITCHABLE_DELETE_BUTTON_CONTAINER_CLASS = "dx-list-switchable-delete-button-container";
var SwitchableEditDecorator = EditDecorator.inherit({
    _init: function() {
        this._$topShield = $("<div>").addClass(SWITCHABLE_DELETE_TOP_SHIELD_CLASS);
        this._$bottomShield = $("<div>").addClass(SWITCHABLE_DELETE_BOTTOM_SHIELD_CLASS);
        this._$itemContentShield = $("<div>").addClass(SWITCHABLE_DELETE_ITEM_CONTENT_SHIELD_CLASS);
        eventsEngine.on(this._$topShield, POINTER_DOWN_EVENT_NAME, this._cancelDeleteReadyItem.bind(this));
        eventsEngine.on(this._$bottomShield, POINTER_DOWN_EVENT_NAME, this._cancelDeleteReadyItem.bind(this));
        this._list.$element().append(this._$topShield.toggle(false)).append(this._$bottomShield.toggle(false))
    },
    handleClick: function() {
        return this._cancelDeleteReadyItem()
    },
    _cancelDeleteReadyItem: function() {
        if (!this._$readyToDeleteItem) {
            return false
        }
        this._cancelDelete(this._$readyToDeleteItem);
        return true
    },
    _cancelDelete: function($itemElement) {
        this._toggleDeleteReady($itemElement, false)
    },
    _toggleDeleteReady: function($itemElement, readyToDelete) {
        if (void 0 === readyToDelete) {
            readyToDelete = !this._isReadyToDelete($itemElement)
        }
        this._toggleShields($itemElement, readyToDelete);
        this._toggleScrolling(readyToDelete);
        this._cacheReadyToDeleteItem($itemElement, readyToDelete);
        this._animateToggleDelete($itemElement, readyToDelete)
    },
    _isReadyToDelete: function($itemElement) {
        return $itemElement.hasClass(SWITCHABLE_DELETE_READY_CLASS)
    },
    _toggleShields: function($itemElement, enabled) {
        this._list.$element().toggleClass(SWITCHABLE_MENU_SHIELD_POSITIONING_CLASS, enabled);
        this._$topShield.toggle(enabled);
        this._$bottomShield.toggle(enabled);
        if (enabled) {
            this._updateShieldsHeight($itemElement)
        }
        this._toggleContentShield($itemElement, enabled)
    },
    _updateShieldsHeight: function($itemElement) {
        var $list = this._list.$element(),
            listTopOffset = $list.offset().top,
            listHeight = $list.outerHeight(),
            itemTopOffset = $itemElement.offset().top,
            itemHeight = $itemElement.outerHeight(),
            dirtyTopShieldHeight = itemTopOffset - listTopOffset,
            dirtyBottomShieldHeight = listHeight - itemHeight - dirtyTopShieldHeight;
        this._$topShield.height(Math.max(dirtyTopShieldHeight, 0));
        this._$bottomShield.height(Math.max(dirtyBottomShieldHeight, 0))
    },
    _toggleContentShield: function($itemElement, enabled) {
        if (enabled) {
            $itemElement.find("." + LIST_ITEM_CONTENT_CLASS).first().append(this._$itemContentShield)
        } else {
            this._$itemContentShield.detach()
        }
    },
    _toggleScrolling: function(readyToDelete) {
        var scrollView = this._list.$element().dxScrollView("instance");
        if (readyToDelete) {
            scrollView.on("start", this._cancelScrolling)
        } else {
            scrollView.off("start", this._cancelScrolling)
        }
    },
    _cancelScrolling: function(args) {
        args.event.cancel = true
    },
    _cacheReadyToDeleteItem: function($itemElement, cache) {
        if (cache) {
            this._$readyToDeleteItem = $itemElement
        } else {
            delete this._$readyToDeleteItem
        }
    },
    _animateToggleDelete: function($itemElement, readyToDelete) {
        if (readyToDelete) {
            this._enablePositioning($itemElement);
            this._prepareDeleteReady($itemElement);
            this._animatePrepareDeleteReady($itemElement);
            eventsEngine.off($itemElement, pointerEvents.up)
        } else {
            this._forgetDeleteReady($itemElement);
            this._animateForgetDeleteReady($itemElement).done(this._disablePositioning.bind(this, $itemElement))
        }
    },
    _enablePositioning: function($itemElement) {
        $itemElement.addClass(SWITCHABLE_MENU_ITEM_SHIELD_POSITIONING_CLASS);
        eventsEngine.on($itemElement, ACTIVE_EVENT_NAME, noop);
        eventsEngine.one($itemElement, pointerEvents.up, this._disablePositioning.bind(this, $itemElement))
    },
    _disablePositioning: function($itemElement) {
        $itemElement.removeClass(SWITCHABLE_MENU_ITEM_SHIELD_POSITIONING_CLASS);
        eventsEngine.off($itemElement, ACTIVE_EVENT_NAME)
    },
    _prepareDeleteReady: function($itemElement) {
        $itemElement.addClass(SWITCHABLE_DELETE_READY_CLASS)
    },
    _forgetDeleteReady: function($itemElement) {
        $itemElement.removeClass(SWITCHABLE_DELETE_READY_CLASS)
    },
    _animatePrepareDeleteReady: abstract,
    _animateForgetDeleteReady: abstract,
    _getDeleteButtonContainer: function($itemElement) {
        $itemElement = $itemElement || this._$readyToDeleteItem;
        return $itemElement.children("." + SWITCHABLE_DELETE_BUTTON_CONTAINER_CLASS)
    },
    _deleteItem: function($itemElement) {
        $itemElement = $itemElement || this._$readyToDeleteItem;
        this._getDeleteButtonContainer($itemElement).detach();
        if ($itemElement.is(".dx-state-disabled, .dx-state-disabled *")) {
            return
        }
        this._list.deleteItem($itemElement).always(this._cancelDelete.bind(this, $itemElement))
    },
    _isRtlEnabled: function() {
        return this._list.option("rtlEnabled")
    },
    dispose: function() {
        if (this._$topShield) {
            this._$topShield.remove()
        }
        if (this._$bottomShield) {
            this._$bottomShield.remove()
        }
        this.callBase.apply(this, arguments)
    }
});
module.exports = SwitchableEditDecorator;
