/**
+ * @class Ext.form.Labelable
+
+A mixin which allows a component to be configured and decorated with a label and/or error message as is
+common for form fields. This is used by e.g. {@link Ext.form.field.Base} and {@link Ext.form.FieldContainer}
+to let them be managed by the Field layout.
+
+**NOTE**: This mixin is mainly for internal library use and most users should not need to use it directly. It
+is more likely you will want to use one of the component classes that import this mixin, such as
+{@link Ext.form.field.Base} or {@link Ext.form.FieldContainer}.
+
+Use of this mixin does not make a component a field in the logical sense, meaning it does not provide any
+logic or state related to values or validation; that is handled by the related {@link Ext.form.field.Field}
+mixin. These two mixins may be used separately (for example {@link Ext.form.FieldContainer} is Labelable but not a
+Field), or in combination (for example {@link Ext.form.field.Base} implements both and has logic for connecting the
+two.)
+
+Component classes which use this mixin should use the Field layout
+or a derivation thereof to properly size and position the label and message according to the component config.
+They must also call the {@link #initLabelable} method during component initialization to ensure the mixin gets
+set up correctly.
+
+ * @markdown
+ * @docauthor Jason Johnston <jason@sencha.com>
+ */
+Ext.define("Ext.form.Labelable", {
+ requires: ['Ext.XTemplate'],
+
+ /**
+ * @cfg {Array/String/Ext.XTemplate} labelableRenderTpl
+ * The rendering template for the field decorations. Component classes using this mixin should include
+ * logic to use this as their {@link Ext.AbstractComponent#renderTpl renderTpl}, and implement the
+ * {@link #getSubTplMarkup} method to generate the field body content.
+ */
+ labelableRenderTpl: [
+ '<tpl if="!hideLabel && !(!fieldLabel && hideEmptyLabel)">',
+ '<label<tpl if="inputId"> for="{inputId}"</tpl> class="{labelCls}"<tpl if="labelStyle"> style="{labelStyle}"</tpl>>',
+ '<tpl if="fieldLabel">{fieldLabel}{labelSeparator}</tpl>',
+ '</label>',
+ '</tpl>',
+ '<div class="{baseBodyCls} {fieldBodyCls}"<tpl if="inputId"> id="{baseBodyCls}-{inputId}"</tpl> role="presentation">{subTplMarkup}</div>',
+ '<div class="{errorMsgCls}" style="display:none"></div>',
+ '<div class="{clearCls}" role="presentation"><!-- --></div>',
+ {
+ compiled: true,
+ disableFormats: true
+ }
+ ],
+
+ /**
+ * @cfg {Ext.XTemplate} activeErrorsTpl
+ * The template used to format the Array of error messages passed to {@link #setActiveErrors}
+ * into a single HTML string. By default this renders each message as an item in an unordered list.
+ */
+ activeErrorsTpl: [
+ '<tpl if="errors && errors.length">',
+ '<ul><tpl for="errors"><li<tpl if="xindex == xcount"> class="last"</tpl>>{.}</li></tpl></ul>',
+ '</tpl>'
+ ],
+
+ /**
+ * @property isFieldLabelable
+ * @type Boolean
+ * Flag denoting that this object is labelable as a field. Always true.
+ */
+ isFieldLabelable: true,
+
+ /**
+ * @cfg {String} formItemCls
+ * A CSS class to be applied to the outermost element to denote that it is participating in the form
+ * field layout. Defaults to 'x-form-item'.
+ */
+ formItemCls: Ext.baseCSSPrefix + 'form-item',
+
+ /**
+ * @cfg {String} labelCls
+ * The CSS class to be applied to the label element. Defaults to 'x-form-item-label'.
+ */
+ labelCls: Ext.baseCSSPrefix + 'form-item-label',
+
+ /**
+ * @cfg {String} errorMsgCls
+ * The CSS class to be applied to the error message element. Defaults to 'x-form-error-msg'.
+ */
+ errorMsgCls: Ext.baseCSSPrefix + 'form-error-msg',
+
+ /**
+ * @cfg {String} baseBodyCls
+ * The CSS class to be applied to the body content element. Defaults to 'x-form-item-body'.
+ */
+ baseBodyCls: Ext.baseCSSPrefix + 'form-item-body',
+
+ /**
+ * @cfg {String} fieldBodyCls
+ * An extra CSS class to be applied to the body content element in addition to {@link #fieldBodyCls}.
+ * Defaults to empty.
+ */
+ fieldBodyCls: '',
+
+ /**
+ * @cfg {String} clearCls
+ * The CSS class to be applied to the special clearing div rendered directly after the field
+ * contents wrapper to provide field clearing (defaults to <tt>'x-clear'</tt>).
+ */
+ clearCls: Ext.baseCSSPrefix + 'clear',
+
+ /**
+ * @cfg {String} invalidCls
+ * The CSS class to use when marking the component invalid (defaults to 'x-form-invalid')
+ */
+ invalidCls : Ext.baseCSSPrefix + 'form-invalid',
+
+ /**
+ * @cfg {String} fieldLabel
+ * The label for the field. It gets appended with the {@link #labelSeparator}, and its position
+ * and sizing is determined by the {@link #labelAlign}, {@link #labelWidth}, and {@link #labelPad}
+ * configs. Defaults to undefined.
+ */
+ fieldLabel: undefined,
+
+ /**
+ * @cfg {String} labelAlign
+ * <p>Controls the position and alignment of the {@link #fieldLabel}. Valid values are:</p>
+ * <ul>
+ * <li><tt>"left"</tt> (the default) - The label is positioned to the left of the field, with its text
+ * aligned to the left. Its width is determined by the {@link #labelWidth} config.</li>
+ * <li><tt>"top"</tt> - The label is positioned above the field.</li>
+ * <li><tt>"right"</tt> - The label is positioned to the left of the field, with its text aligned
+ * to the right. Its width is determined by the {@link #labelWidth} config.</li>
+ * </ul>
+ */
+ labelAlign : 'left',
+
+ /**
+ * @cfg {Number} labelWidth
+ * The width of the {@link #fieldLabel} in pixels. Only applicable if the {@link #labelAlign} is set
+ * to "left" or "right". Defaults to <tt>100</tt>.
+ */
+ labelWidth: 100,
+
+ /**
+ * @cfg {Number} labelPad
+ * The amount of space in pixels between the {@link #fieldLabel} and the input field. Defaults to <tt>5</tt>.
+ */
+ labelPad : 5,
+
+ /**
+ * @cfg {String} labelSeparator
+ * Character(s) to be inserted at the end of the {@link #fieldLabel label text}.
+ */
+ labelSeparator : ':',
+
+ /**
+ * @cfg {String} labelStyle
+ * <p>A CSS style specification string to apply directly to this field's label. Defaults to undefined.</p>
+ */
+
+ /**
+ * @cfg {Boolean} hideLabel
+ * <p>Set to <tt>true</tt> to completely hide the label element ({@link #fieldLabel} and {@link #labelSeparator}).
+ * Defaults to <tt>false</tt>.</p>
+ * <p>Also see {@link #hideEmptyLabel}, which controls whether space will be reserved for an empty fieldLabel.</p>
+ */
+ hideLabel: false,
+
+ /**
+ * @cfg {Boolean} hideEmptyLabel
+ * <p>When set to <tt>true</tt>, the label element ({@link #fieldLabel} and {@link #labelSeparator}) will be
+ * automatically hidden if the {@link #fieldLabel} is empty. Setting this to <tt>false</tt> will cause the empty
+ * label element to be rendered and space to be reserved for it; this is useful if you want a field without a label
+ * to line up with other labeled fields in the same form. Defaults to <tt>true</tt>.</p>
+ * <p>If you wish to unconditionall hide the label even if a non-empty fieldLabel is configured, then set
+ * the {@link #hideLabel} config to <tt>true</tt>.</p>
+ */
+ hideEmptyLabel: true,
+
+ /**
+ * @cfg {Boolean} preventMark
+ * <tt>true</tt> to disable displaying any {@link #setActiveError error message} set on this object.
+ * Defaults to <tt>false</tt>.
+ */
+ preventMark: false,
+
+ /**
+ * @cfg {Boolean} autoFitErrors
+ * Whether to adjust the component's body area to make room for 'side' or 'under'
+ * {@link #msgTarget error messages}. Defaults to <tt>true</tt>.
+ */
+ autoFitErrors: true,
+
+ /**
+ * @cfg {String} msgTarget <p>The location where the error message text should display.
+ * Must be one of the following values:</p>
+ * <div class="mdetail-params"><ul>
+ * <li><code>qtip</code> Display a quick tip containing the message when the user hovers over the field. This is the default.
+ * <div class="subdesc"><b>{@link Ext.tip.QuickTipManager#init Ext.tip.QuickTipManager.init} must have been called for this setting to work.</b></div></li>
+ * <li><code>title</code> Display the message in a default browser title attribute popup.</li>
+ * <li><code>under</code> Add a block div beneath the field containing the error message.</li>
+ * <li><code>side</code> Add an error icon to the right of the field, displaying the message in a popup on hover.</li>
+ * <li><code>none</code> Don't display any error message. This might be useful if you are implementing custom error display.</li>
+ * <li><code>[element id]</code> Add the error message directly to the innerHTML of the specified element.</li>
+ * </ul></div>
+ */
+ msgTarget: 'qtip',
+
+ /**
+ * @cfg {String} activeError
+ * If specified, then the component will be displayed with this value as its active error when
+ * first rendered. Defaults to undefined. Use {@link #setActiveError} or {@link #unsetActiveError} to
+ * change it after component creation.
+ */
+
+
+ /**
+ * Performs initialization of this mixin. Component classes using this mixin should call this method
+ * during their own initialization.
+ */
+ initLabelable: function() {
+ this.addCls(this.formItemCls);
+
+ this.addEvents(
+ /**
+ * @event errorchange
+ * Fires when the active error message is changed via {@link #setActiveError}.
+ * @param {Ext.form.Labelable} this
+ * @param {String} error The active error message
+ */
+ 'errorchange'
+ );
+ },
+
+ /**
+ * Returns the label for the field. Defaults to simply returning the {@link #fieldLabel} config. Can be
+ * overridden to provide
+ * @return {String} The configured field label, or empty string if not defined
+ */
+ getFieldLabel: function() {
+ return this.fieldLabel || '';
+ },
+
+ /**
+ * @protected
+ * Generates the arguments for the field decorations {@link #labelableRenderTpl rendering template}.
+ * @return {Object} The template arguments
+ */
+ getLabelableRenderData: function() {
+ var me = this,
+ labelAlign = me.labelAlign,
+ labelPad = me.labelPad,
+ labelStyle;
+
+ // Calculate label styles up front rather than in the Field layout for speed; this
+ // is safe because label alignment/width/pad are not expected to change.
+ if (labelAlign === 'top') {
+ labelStyle = 'margin-bottom:' + labelPad + 'px;';
+ } else {
+ labelStyle = 'margin-right:' + labelPad + 'px;';
+ // Add the width for border-box browsers; will be set by the Field layout for content-box
+ if (Ext.isBorderBox) {
+ labelStyle += 'width:' + me.labelWidth + 'px;';
+ }
+ }
+
+ return Ext.copyTo(
+ {
+ inputId: me.getInputId(),
+ fieldLabel: me.getFieldLabel(),
+ labelStyle: labelStyle + (me.labelStyle || ''),
+ subTplMarkup: me.getSubTplMarkup()
+ },
+ me,
+ 'hideLabel,hideEmptyLabel,labelCls,fieldBodyCls,baseBodyCls,errorMsgCls,clearCls,labelSeparator',
+ true
+ );
+ },
+
+ /**
+ * @protected
+ * Returns the additional {@link Ext.AbstractComponent#renderSelectors} for selecting the field
+ * decoration elements from the rendered {@link #labelableRenderTpl}. Component classes using this mixin should
+ * be sure and merge this method's result into the component's {@link Ext.AbstractComponent#renderSelectors}
+ * before rendering.
+ */
+ getLabelableSelectors: function() {
+ return {
+ /**
+ * @property labelEl
+ * @type Ext.core.Element
+ * The label Element for this component. Only available after the component has been rendered.
+ */
+ labelEl: 'label.' + this.labelCls,
+
+ /**
+ * @property bodyEl
+ * @type Ext.core.Element
+ * The div Element wrapping the component's contents. Only available after the component has been rendered.
+ */
+ bodyEl: '.' + this.baseBodyCls,
+
+ /**
+ * @property errorEl
+ * @type Ext.core.Element
+ * The div Element that will contain the component's error message(s). Note that depending on the
+ * configured {@link #msgTarget}, this element may be hidden in favor of some other form of
+ * presentation, but will always be present in the DOM for use by assistive technologies.
+ */
+ errorEl: '.' + this.errorMsgCls
+ };
+ },
+
+ /**
+ * @protected
+ * Gets the markup to be inserted into the outer template's bodyEl. Defaults to empty string, should
+ * be implemented by classes including this mixin as needed.
+ * @return {String} The markup to be inserted
+ */
+ getSubTplMarkup: function() {
+ return '';
+ },
+
+ /**
+ * Get the input id, if any, for this component. This is used as the "for" attribute on the label element.
+ * Implementing subclasses may also use this as e.g. the id for their own <tt>input</tt> element.
+ * @return {String} The input id
+ */
+ getInputId: function() {
+ return '';
+ },
+
+ /**
+ * Gets the active error message for this component, if any. This does not trigger
+ * validation on its own, it merely returns any message that the component may already hold.
+ * @return {String} The active error message on the component; if there is no error, an empty string is returned.
+ */
+ getActiveError : function() {
+ return this.activeError || '';
+ },
+
+ /**
+ * Tells whether the field currently has an active error message. This does not trigger
+ * validation on its own, it merely looks for any message that the component may already hold.
+ * @return {Boolean}
+ */
+ hasActiveError: function() {
+ return !!this.getActiveError();
+ },
+
+ /**
+ * Sets the active error message to the given string. This replaces the entire error message
+ * contents with the given string. Also see {@link #setActiveErrors} which accepts an Array of
+ * messages and formats them according to the {@link #activeErrorsTpl}.
+ * @param {String} msg The error message
+ */
+ setActiveError: function(msg) {
+ this.activeError = msg;
+ this.activeErrors = [msg];
+ this.renderActiveError();
+ },
+
+ /**
+ * Gets an Array of any active error messages currently applied to the field. This does not trigger
+ * validation on its own, it merely returns any messages that the component may already hold.
+ * @return {Array} The active error messages on the component; if there are no errors, an empty Array is returned.
+ */
+ getActiveErrors: function() {
+ return this.activeErrors || [];
+ },
+
+ /**
+ * Set the active error message to an Array of error messages. The messages are formatted into
+ * a single message string using the {@link #activeErrorsTpl}. Also see {@link #setActiveError}
+ * which allows setting the entire error contents with a single string.
+ * @param {Array} errors The error messages
+ */
+ setActiveErrors: function(errors) {
+ this.activeErrors = errors;
+ this.activeError = this.getTpl('activeErrorsTpl').apply({errors: errors});
+ this.renderActiveError();
+ },
+
+ /**
+ * Clears the active error.
+ */
+ unsetActiveError: function() {
+ delete this.activeError;
+ delete this.activeErrors;
+ this.renderActiveError();
+ },
+
+ /**
+ * @private
+ * Updates the rendered DOM to match the current activeError. This only updates the content and
+ * attributes, you'll have to call doComponentLayout to actually update the display.
+ */
+ renderActiveError: function() {
+ var me = this,
+ activeError = me.getActiveError(),
+ hasError = !!activeError;
+
+ if (activeError !== me.lastActiveError) {
+ me.fireEvent('errorchange', me, activeError);
+ me.lastActiveError = activeError;
+ }
+
+ if (me.rendered && !me.isDestroyed && !me.preventMark) {
+ // Add/remove invalid class
+ me.el[hasError ? 'addCls' : 'removeCls'](me.invalidCls);
+
+ // Update the aria-invalid attribute
+ me.getActionEl().dom.setAttribute('aria-invalid', hasError);
+
+ // Update the errorEl with the error message text
+ me.errorEl.dom.innerHTML = activeError;
+ }
+ },
+
+ /**
+ * Applies a set of default configuration values to this Labelable instance. For each of the
+ * properties in the given object, check if this component hasOwnProperty that config; if not
+ * then it's inheriting a default value from its prototype and we should apply the default value.
+ * @param {Object} defaults The defaults to apply to the object.
+ */
+ setFieldDefaults: function(defaults) {
+ var me = this;
+ Ext.iterate(defaults, function(key, val) {
+ if (!me.hasOwnProperty(key)) {
+ me[key] = val;
+ }
+ });
+ },
+
+ /**
+ * @protected Calculate and return the natural width of the bodyEl. Override to provide custom logic.
+ * Note for implementors: if at all possible this method should be overridden with a custom implementation
+ * that can avoid anything that would cause the browser to reflow, e.g. querying offsetWidth.
+ */
+ getBodyNaturalWidth: function() {
+ return this.bodyEl.getWidth();
+ }
+
+});
+