/*

This file is part of Ext JS 4

Copyright (c) 2011 Sencha Inc

Contact:  http://www.sencha.com/contact

GNU General Public License Usage
This file may be used under the terms of the GNU General Public License version 3.0 as published by the Free Software Foundation and appearing in the file LICENSE included in the packaging of this file.  Please review the following information to ensure the GNU General Public License version 3.0 requirements will be met: http://www.gnu.org/copyleft/gpl.html.

If you are unsure which license is appropriate for your use, please contact the sales department at http://www.sencha.com/contact.

*/
/**
 * @class Ext.grid.property.Grid
 * @extends Ext.grid.Panel
 *
 * A specialized grid implementation intended to mimic the traditional property grid as typically seen in
 * development IDEs.  Each row in the grid represents a property of some object, and the data is stored
 * as a set of name/value pairs in {@link Ext.grid.property.Property Properties}.  Example usage:
 *
 *     @example
 *     Ext.create('Ext.grid.property.Grid', {
 *         title: 'Properties Grid',
 *         width: 300,
 *         renderTo: Ext.getBody(),
 *         source: {
 *             "(name)": "My Object",
 *             "Created": Ext.Date.parse('10/15/2006', 'm/d/Y'),
 *             "Available": false,
 *             "Version": .01,
 *             "Description": "A test object"
 *         }
 *     });
 */
Ext.define('Ext.grid.property.Grid', {

    extend: 'Ext.grid.Panel',

    alias: 'widget.propertygrid',

    alternateClassName: 'Ext.grid.PropertyGrid',

    uses: [
       'Ext.grid.plugin.CellEditing',
       'Ext.grid.property.Store',
       'Ext.grid.property.HeaderContainer',
       'Ext.XTemplate',
       'Ext.grid.CellEditor',
       'Ext.form.field.Date',
       'Ext.form.field.Text',
       'Ext.form.field.Number'
    ],

   /**
    * @cfg {Object} propertyNames An object containing custom property name/display name pairs.
    * If specified, the display name will be shown in the name column instead of the property name.
    */

    /**
    * @cfg {Object} source A data object to use as the data source of the grid (see {@link #setSource} for details).
    */

    /**
    * @cfg {Object} customEditors An object containing name/value pairs of custom editor type definitions that allow
    * the grid to support additional types of editable fields.  By default, the grid supports strongly-typed editing
    * of strings, dates, numbers and booleans using built-in form editors, but any custom type can be supported and
    * associated with a custom input control by specifying a custom editor.  The name of the editor
    * type should correspond with the name of the property that will use the editor.  Example usage:
    * <pre><code>
var grid = new Ext.grid.property.Grid({

    // Custom editors for certain property names
    customEditors: {
        evtStart: Ext.create('Ext.form.TimeField' {selectOnFocus:true})
    },

    // Displayed name for property names in the source
    propertyNames: {
        evtStart: 'Start Time'
    },

    // Data object containing properties to edit
    source: {
        evtStart: '10:00 AM'
    }
});
</code></pre>
    */

    /**
    * @cfg {Object} source A data object to use as the data source of the grid (see {@link #setSource} for details).
    */

    /**
    * @cfg {Object} customRenderers An object containing name/value pairs of custom renderer type definitions that allow
    * the grid to support custom rendering of fields.  By default, the grid supports strongly-typed rendering
    * of strings, dates, numbers and booleans using built-in form editors, but any custom type can be supported and
    * associated with the type of the value.  The name of the renderer type should correspond with the name of the property
    * that it will render.  Example usage:
    * <pre><code>
var grid = Ext.create('Ext.grid.property.Grid', {
    customRenderers: {
        Available: function(v){
            if (v) {
                return '<span style="color: green;">Yes</span>';
            } else {
                return '<span style="color: red;">No</span>';
            }
        }
    },
    source: {
        Available: true
    }
});
</code></pre>
    */

    /**
     * @cfg {String} valueField
     * Optional. The name of the field from the property store to use as the value field name. Defaults to <code>'value'</code>
     * This may be useful if you do not configure the property Grid from an object, but use your own store configuration.
     */
    valueField: 'value',

    /**
     * @cfg {String} nameField
     * Optional. The name of the field from the property store to use as the property field name. Defaults to <code>'name'</code>
     * This may be useful if you do not configure the property Grid from an object, but use your own store configuration.
     */
    nameField: 'name',

    /**
     * @cfg {Number} nameColumnWidth
     * Optional. Specify the width for the name column. The value column will take any remaining space. Defaults to <tt>115</tt>.
     */

    // private config overrides
    enableColumnMove: false,
    columnLines: true,
    stripeRows: false,
    trackMouseOver: false,
    clicksToEdit: 1,
    enableHdMenu: false,

    // private
    initComponent : function(){
        var me = this;

        me.addCls(Ext.baseCSSPrefix + 'property-grid');
        me.plugins = me.plugins || [];

        // Enable cell editing. Inject a custom startEdit which always edits column 1 regardless of which column was clicked.
        me.plugins.push(Ext.create('Ext.grid.plugin.CellEditing', {
            clicksToEdit: me.clicksToEdit,

            // Inject a startEdit which always edits the value column
            startEdit: function(record, column) {
                // Maintainer: Do not change this 'this' to 'me'! It is the CellEditing object's own scope.
                return this.self.prototype.startEdit.call(this, record, me.headerCt.child('#' + me.valueField));
            }
        }));

        me.selModel = {
            selType: 'cellmodel',
            onCellSelect: function(position) {
                if (position.column != 1) {
                    position.column = 1;
                }
                return this.self.prototype.onCellSelect.call(this, position);
            }
        };
        me.customRenderers = me.customRenderers || {};
        me.customEditors = me.customEditors || {};

        // Create a property.Store from the source object unless configured with a store
        if (!me.store) {
            me.propStore = me.store = Ext.create('Ext.grid.property.Store', me, me.source);
        }

        me.store.sort('name', 'ASC');
        me.columns = Ext.create('Ext.grid.property.HeaderContainer', me, me.store);

        me.addEvents(
            /**
             * @event beforepropertychange
             * Fires before a property value changes.  Handlers can return false to cancel the property change
             * (this will internally call {@link Ext.data.Model#reject} on the property's record).
             * @param {Object} source The source data object for the grid (corresponds to the same object passed in
             * as the {@link #source} config property).
             * @param {String} recordId The record's id in the data store
             * @param {Object} value The current edited property value
             * @param {Object} oldValue The original property value prior to editing
             */
            'beforepropertychange',
            /**
             * @event propertychange
             * Fires after a property value has changed.
             * @param {Object} source The source data object for the grid (corresponds to the same object passed in
             * as the {@link #source} config property).
             * @param {String} recordId The record's id in the data store
             * @param {Object} value The current edited property value
             * @param {Object} oldValue The original property value prior to editing
             */
            'propertychange'
        );
        me.callParent();

        // Inject a custom implementation of walkCells which only goes up or down
        me.getView().walkCells = this.walkCells;

        // Set up our default editor set for the 4 atomic data types
        me.editors = {
            'date'    : Ext.create('Ext.grid.CellEditor', { field: Ext.create('Ext.form.field.Date',   {selectOnFocus: true})}),
            'string'  : Ext.create('Ext.grid.CellEditor', { field: Ext.create('Ext.form.field.Text',   {selectOnFocus: true})}),
            'number'  : Ext.create('Ext.grid.CellEditor', { field: Ext.create('Ext.form.field.Number', {selectOnFocus: true})}),
            'boolean' : Ext.create('Ext.grid.CellEditor', { field: Ext.create('Ext.form.field.ComboBox', {
                editable: false,
                store: [[ true, me.headerCt.trueText ], [false, me.headerCt.falseText ]]
            })})
        };

        // Track changes to the data so we can fire our events.
        me.store.on('update', me.onUpdate, me);
    },

    // private
    onUpdate : function(store, record, operation) {
        var me = this,
            v, oldValue;

        if (operation == Ext.data.Model.EDIT) {
            v = record.get(me.valueField);
            oldValue = record.modified.value;
            if (me.fireEvent('beforepropertychange', me.source, record.getId(), v, oldValue) !== false) {
                if (me.source) {
                    me.source[record.getId()] = v;
                }
                record.commit();
                me.fireEvent('propertychange', me.source, record.getId(), v, oldValue);
            } else {
                record.reject();
            }
        }
    },

    // Custom implementation of walkCells which only goes up and down.
    walkCells: function(pos, direction, e, preventWrap, verifierFn, scope) {
        if (direction == 'left') {
            direction = 'up';
        } else if (direction == 'right') {
            direction = 'down';
        }
        pos = Ext.view.Table.prototype.walkCells.call(this, pos, direction, e, preventWrap, verifierFn, scope);
        if (!pos.column) {
            pos.column = 1;
        }
        return pos;
    },

    // private
    // returns the correct editor type for the property type, or a custom one keyed by the property name
    getCellEditor : function(record, column) {
        var me = this,
            propName = record.get(me.nameField),
            val = record.get(me.valueField),
            editor = me.customEditors[propName];

        // A custom editor was found. If not already wrapped with a CellEditor, wrap it, and stash it back
        // If it's not even a Field, just a config object, instantiate it before wrapping it.
        if (editor) {
            if (!(editor instanceof Ext.grid.CellEditor)) {
                if (!(editor instanceof Ext.form.field.Base)) {
                    editor = Ext.ComponentManager.create(editor, 'textfield');
                }
                editor = me.customEditors[propName] = Ext.create('Ext.grid.CellEditor', { field: editor });
            }
        } else if (Ext.isDate(val)) {
            editor = me.editors.date;
        } else if (Ext.isNumber(val)) {
            editor = me.editors.number;
        } else if (Ext.isBoolean(val)) {
            editor = me.editors['boolean'];
        } else {
            editor = me.editors.string;
        }

        // Give the editor a unique ID because the CellEditing plugin caches them
        editor.editorId = propName;
        return editor;
    },

    beforeDestroy: function() {
        var me = this;
        me.callParent();
        me.destroyEditors(me.editors);
        me.destroyEditors(me.customEditors);
        delete me.source;
    },

    destroyEditors: function (editors) {
        for (var ed in editors) {
            if (editors.hasOwnProperty(ed)) {
                Ext.destroy(editors[ed]);
            }
        }
    },

    /**
     * Sets the source data object containing the property data.  The data object can contain one or more name/value
     * pairs representing all of the properties of an object to display in the grid, and this data will automatically
     * be loaded into the grid's {@link #store}.  The values should be supplied in the proper data type if needed,
     * otherwise string type will be assumed.  If the grid already contains data, this method will replace any
     * existing data.  See also the {@link #source} config value.  Example usage:
     * <pre><code>
grid.setSource({
    "(name)": "My Object",
    "Created": Ext.Date.parse('10/15/2006', 'm/d/Y'),  // date type
    "Available": false,  // boolean type
    "Version": .01,      // decimal type
    "Description": "A test object"
});
</code></pre>
     * @param {Object} source The data object
     */
    setSource: function(source) {
        this.source = source;
        this.propStore.setSource(source);
    },

    /**
     * Gets the source data object containing the property data.  See {@link #setSource} for details regarding the
     * format of the data object.
     * @return {Object} The data object
     */
    getSource: function() {
        return this.propStore.getSource();
    },

    /**
     * Sets the value of a property.
     * @param {String} prop The name of the property to set
     * @param {Object} value The value to test
     * @param {Boolean} create (Optional) True to create the property if it doesn't already exist. Defaults to <tt>false</tt>.
     */
    setProperty: function(prop, value, create) {
        this.propStore.setValue(prop, value, create);
    },

    /**
     * Removes a property from the grid.
     * @param {String} prop The name of the property to remove
     */
    removeProperty: function(prop) {
        this.propStore.remove(prop);
    }

    /**
     * @cfg store
     * @hide
     */
    /**
     * @cfg colModel
     * @hide
     */
    /**
     * @cfg cm
     * @hide
     */
    /**
     * @cfg columns
     * @hide
     */
});
