/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Academic Free License (AFL 3.0)
 * that is bundled with this package in the file LICENSE_AFL.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/afl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    Mage
 * @package     Mage_Adminhtml
 * @copyright   Copyright (c) 2010 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
 */

var VarienRulesForm = new Class.create();
VarienRulesForm.prototype = {
    initialize : function(parent, newChildUrl){
        this.newChildUrl  = newChildUrl;
        this.shownElement = null;
        this.updateElement = null;
        this.chooserSelectedItems = $H({});

        var elems = $(parent).getElementsByClassName('rule-param');

        for (var i=0; i<elems.length; i++) {
            this.initParam(elems[i]);
        }
    },

    initParam: function (container) {
        container.rulesObject = this;
        var label = Element.down(container, '.label');
        if (label) {
            Event.observe(label, 'click', this.showParamInputField.bind(this, container));
        }

        var elem = Element.down(container, '.element');
        if (elem) {
            var trig = elem.down('.rule-chooser-trigger');
            if (trig) {
                Event.observe(trig, 'click', this.toggleChooser.bind(this, container));
            }

            var apply = elem.down('.rule-param-apply');
            if (apply) {
                Event.observe(apply, 'click', this.hideParamInputField.bind(this, container));
            } else {
                elem = elem.down('.element-value-changer');
                elem.container = container;
                if (!elem.multiple) {
                    Event.observe(elem, 'change', this.hideParamInputField.bind(this, container));
                }
                Event.observe(elem, 'blur', this.hideParamInputField.bind(this, container));
            }
        }

        var remove = Element.down(container, '.rule-param-remove');
        if (remove) {
            Event.observe(remove, 'click', this.removeRuleEntry.bind(this, container));
        }
    },

    showChooserElement: function (chooser) {
        this.chooserSelectedItems = $H({});
        if (chooser.hasClassName('no-split')) {
            this.chooserSelectedItems.set(this.updateElement.value, 1);
        } else {
            var values = this.updateElement.value.split(','), s = '';
            for (i=0; i<values.length; i++) {
                s = values[i].strip();
                if (s!='') {
                   this.chooserSelectedItems.set(s,1);
                }
            }
        }
        new Ajax.Request(chooser.getAttribute('url'), {
            evalScripts: true,
            parameters: {'form_key': FORM_KEY, 'selected[]':this.chooserSelectedItems.keys() },
            onSuccess: function(transport) {
                if (this._processSuccess(transport)) {
                    $(chooser).update(transport.responseText);
                    this.showChooserLoaded(chooser, transport);
                }
            }.bind(this),
            onFailure: this._processFailure.bind(this)
        });
    },

    showChooserLoaded: function(chooser, transport) {
        chooser.style.display = 'block';
    },

    showChooser: function (container, event) {
        var chooser = container.up('li');
        if (!chooser) {
            return;
        }
        chooser = chooser.down('.rule-chooser');
        if (!chooser) {
            return;
        }
        this.showChooserElement(chooser);
    },

    hideChooser: function (container, event) {
        var chooser = container.up('li');
        if (!chooser) {
            return;
        }
        chooser = chooser.down('.rule-chooser');
        if (!chooser) {
            return;
        }
        chooser.style.display = 'none';
    },

    toggleChooser: function (container, event) {
        var chooser = container.up('li').down('.rule-chooser');
        if (!chooser) {
            return;
        }
        if (chooser.style.display=='block') {
            chooser.style.display = 'none';
            this.cleanChooser(container, event);
        } else {
            this.showChooserElement(chooser);
        }
    },

    cleanChooser: function (container, event) {
        var chooser = container.up('li').down('.rule-chooser');
        if (!chooser) {
            return;
        }
        chooser.innerHTML = '';
    },

    showParamInputField: function (container, event) {
        if (this.shownElement) {
            this.hideParamInputField(this.shownElement, event);
        }

        Element.addClassName(container, 'rule-param-edit');
        var elemContainer = Element.down(container, '.element');

        var elem = Element.down(elemContainer, 'input.input-text');
        if (elem) {
            elem.focus();
            if (elem && elem.id && elem.id.match(/__value$/)) {
                this.updateElement = elem;
                //this.showChooser(container, event);
            }

        }

        var elem = Element.down(elemContainer, '.element-value-changer');
        if (elem) {
           elem.focus();
           // trying to emulate enter to open dropdown
//         if (document.createEventObject) {
//             var event = document.createEventObject();
//             event.altKey = true;
//             event.keyCode = 40;
//             elem.fireEvent("onkeydown", evt);
//         } else {
//             var event = document.createEvent("Events");
//             event.altKey = true;
//             event.keyCode = 40;
//             elem.dispatchEvent(event);
//         }
        }

        this.shownElement = container;
    },

    hideParamInputField: function (container, event) {
        Element.removeClassName(container, 'rule-param-edit');
        var label = Element.down(container, '.label'), elem;

        if (!container.hasClassName('rule-param-new-child')) {
            elem = Element.down(container, '.element-value-changer');
            if (elem && elem.options) {
                var selectedOptions = [];
                for (i=0; i<elem.options.length; i++) {
                    if (elem.options[i].selected) {
                        selectedOptions.push(elem.options[i].text);
                    }
                }

                var str = selectedOptions.join(', ');
                label.innerHTML = str!='' ? str : '...';
//              if (elem && elem.selectedIndex>=0) {
//                  var str = elem.options[elem.selectedIndex].text;
//                  label.innerHTML = str!='' ? str : '...';
//              }
            }

            elem = Element.down(container, 'input.input-text');
            if (elem) {
                var str = elem.value.replace(/(^\s+|\s+$)/g, '');
                elem.value = str;
                if (str=='') {
                    str = '...';
                } else if (str.length>30) {
                    str = str.substr(0, 30)+'...';
                }
                label.innerHTML = str.escapeHTML();
            }
        } else {
            elem = Element.down(container, '.element-value-changer');
            if (elem.value) {
                this.addRuleNewChild(elem);
            }
            elem.value = '';
        }

        if (elem && elem.id && elem.id.match(/__value$/)) {
            this.hideChooser(container, event);
            this.updateElement = null;
        }

        this.shownElement = null;
    },

    addRuleNewChild: function (elem) {
        var parent_id = elem.id.replace(/^.*__(.*)__.*$/, '$1');
        var children_ul = $(elem.id.replace(/__/g, ':').replace(/[^:]*$/, 'children').replace(/:/g, '__'));
        var max_id = 0, i;
        var children_inputs = Selector.findChildElements(children_ul, $A(['input.hidden']));
        if (children_inputs.length) {
            children_inputs.each(function(el){
                if (el.id.match(/__type$/)) {
                    i = 1 * el.id.replace(/^.*__.*?([0-9]+)__.*$/, '$1');
                    max_id = i > max_id ? i : max_id;
                }
            });
        }
        var new_id = parent_id + '--' + (max_id + 1);
        var new_type = elem.value;
        var new_elem = document.createElement('LI');
        new_elem.className = 'rule-param-wait';
        new_elem.innerHTML = Translator.translate('Please wait, loading...');
        children_ul.insertBefore(new_elem, $(elem).up('li'));

        new Ajax.Request(this.newChildUrl, {
            evalScripts: true,
            parameters: {form_key: FORM_KEY, type:new_type.replace('/','-'), id:new_id },
            onComplete: this.onAddNewChildComplete.bind(this, new_elem),
            onSuccess: function(transport) {
                if(this._processSuccess(transport)) {
                    $(new_elem).update(transport.responseText);
                }
            }.bind(this),
            onFailure: this._processFailure.bind(this)
        });
    },

    _processSuccess : function(transport) {
        if (transport.responseText.isJSON()) {
            var response = transport.responseText.evalJSON()
            if (response.error) {
                alert(response.message);
            }
            if(response.ajaxExpired && response.ajaxRedirect) {
                setLocation(response.ajaxRedirect);
            }
            return false;
        }
        return true;
    },

    _processFailure : function(transport) {
        location.href = BASE_URL;
    },

    onAddNewChildComplete: function (new_elem) {
        $(new_elem).removeClassName('rule-param-wait');
        var elems = new_elem.getElementsByClassName('rule-param');
        for (var i=0; i<elems.length; i++) {
            this.initParam(elems[i]);
        }
    },

    removeRuleEntry: function (container, event) {
        var li = Element.up(container, 'li');
        li.parentNode.removeChild(li);
    },

    chooserGridInit: function (grid) {
        //grid.reloadParams = {'selected[]':this.chooserSelectedItems.keys()};
    },

    chooserGridRowInit: function (grid, row) {
        if (!grid.reloadParams) {
            grid.reloadParams = {'selected[]':this.chooserSelectedItems.keys()};
        }
    },

    chooserGridRowClick: function (grid, event) {
        var trElement = Event.findElement(event, 'tr');
        var isInput = Event.element(event).tagName == 'INPUT';
        if (trElement) {
            var checkbox = Element.select(trElement, 'input');
            if (checkbox[0]) {
                var checked = isInput ? checkbox[0].checked : !checkbox[0].checked;
                grid.setCheckboxChecked(checkbox[0], checked);

            }
        }
    },

    chooserGridCheckboxCheck: function (grid, element, checked) {
        if (checked) {
            if (!element.up('th')) {
                this.chooserSelectedItems.set(element.value,1);
            }
        } else {
            this.chooserSelectedItems.unset(element.value);
        }
        grid.reloadParams = {'selected[]':this.chooserSelectedItems.keys()};
        this.updateElement.value = this.chooserSelectedItems.keys().join(', ');
    }
}