Index: third_party/polymer/components/paper-input/paper-input-decorator.html |
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-<!-- |
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved. |
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE |
-The complete set of authors may be found at http://polymer.github.io/AUTHORS |
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS |
-Code distributed by Google as part of the polymer project is also |
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS |
---> |
- |
-<!-- |
- |
-Material Design: <a href="http://www.google.com/design/spec/components/text-fields.html">Text fields</a> |
- |
-`paper-input-decorator` adds Material Design input field styling and animations to an element. |
- |
-Example: |
- |
- <paper-input-decorator label="Your Name"> |
- <input is="core-input"> |
- </paper-input-decorator> |
- |
- <paper-input-decorator floatingLabel label="Your address"> |
- <textarea></textarea> |
- </paper-input-decorator> |
- |
-Theming |
-------- |
- |
-`paper-input-decorator` uses `core-style` for global theming. The following options are available: |
- |
-- `CoreStyle.g.paperInput.labelColor` - The inline label, floating label, error message and error icon color when the input does not have focus. |
-- `CoreStyle.g.paperInput.focusedColor` - The floating label and the underline color when the input has focus. |
-- `CoreStyle.g.paperInput.invalidColor` - The error message, the error icon, the floating label and the underline's color when the input is invalid and has focus. |
- |
-To add custom styling to only some elements, use these selectors: |
- |
- paper-input-decorator /deep/ .label-text, |
- paper-input-decorator /deep/ .error { |
- /* inline label, floating label, error message and error icon color when the input is unfocused */ |
- color: green; |
- } |
- |
- paper-input-decorator /deep/ ::-webkit-input-placeholder { |
- /* platform specific rules for placeholder text */ |
- color: green; |
- } |
- paper-input-decorator /deep/ ::-moz-placeholder { |
- color: green; |
- } |
- paper-input-decorator /deep/ :-ms-input-placeholder { |
- color: green; |
- } |
- |
- paper-input-decorator /deep/ .unfocused-underline { |
- /* line color when the input is unfocused */ |
- background-color: green; |
- } |
- |
- paper-input-decorator[focused] /deep/ .floating-label .label-text { |
- /* floating label color when the input is focused */ |
- color: orange; |
- } |
- |
- paper-input-decorator /deep/ .focused-underline { |
- /* line color when the input is focused */ |
- background-color: orange; |
- } |
- |
- paper-input-decorator.invalid[focused] /deep/ .floated-label .label-text, |
- paper-input-decorator[focused] /deep/ .error { |
- /* floating label, error message nad error icon color when the input is invalid and focused */ |
- color: salmon; |
- } |
- |
- paper-input-decorator.invalid /deep/ .focused-underline { |
- /* line and color when the input is invalid and focused */ |
- background-color: salmon; |
- } |
- |
-Form submission |
---------------- |
- |
-You can use inputs decorated with this element in a `form` as usual. |
- |
-Validation |
----------- |
- |
-Because you provide the `input` element to `paper-input-decorator`, you can use any validation library |
-or the <a href="https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/HTML5/Constraint_validation">HTML5 Constraints Validation API</a> |
-to implement validation. Set the `isInvalid` attribute when the input is validated, and provide an |
-error message in the `error` attribute. |
- |
-Example: |
- |
- <paper-input-decorator id="paper1" error="Value must start with a number!"> |
- <input id="input1" is="core-input" pattern="^[0-9].*"> |
- </paper-input-decorator> |
- <button onclick="validate()"></button> |
- <script> |
- function validate() { |
- var decorator = document.getElementById('paper1'); |
- var input = document.getElementById('input1'); |
- decorator.isInvalid = !input.validity.valid; |
- } |
- </script> |
- |
-Example to validate as the user types: |
- |
- <template is="auto-binding"> |
- <paper-input-decorator id="paper2" error="Value must start with a number!" isInvalid="{{!$.input2.validity.valid}}"> |
- <input id="input2" is="core-input" pattern="^[0-9].*"> |
- </paper-input-decorator> |
- </template> |
- |
-Accessibility |
-------------- |
- |
-`paper-input-decorator` will automatically set the `aria-label` attribute on the nested input |
-to the value of `label`. Do not set the `placeholder` attribute on the nested input, as it will |
-conflict with this element. |
- |
-@group Paper Elements |
-@element paper-input-decorator |
-@homepage github.io |
---> |
-<link href="../polymer/polymer.html" rel="import"> |
-<link href="../core-icon/core-icon.html" rel="import"> |
-<link href="../core-icons/core-icons.html" rel="import"> |
-<link href="../core-input/core-input.html" rel="import"> |
-<link href="../core-style/core-style.html" rel="import"> |
- |
-<core-style id="paper-input-decorator"> |
- |
-.label-text, |
-.error { |
- color: {{g.paperInput.labelColor}}; |
-} |
- |
-::-webkit-input-placeholder { |
- color: {{g.paperInput.labelColor}}; |
-} |
- |
-::-moz-placeholder { |
- color: {{g.paperInput.labelColor}}; |
-} |
- |
-:-ms-input-placeholder { |
- color: {{g.paperInput.labelColor}}; |
-} |
- |
-.unfocused-underline { |
- background-color: {{g.paperInput.labelColor}}; |
-} |
- |
-:host([focused]) .floated-label .label-text { |
- color: {{g.paperInput.focusedColor}}; |
-} |
- |
-.focused-underline { |
- background-color: {{g.paperInput.focusedColor}}; |
-} |
- |
-:host(.invalid) .floated-label .label-text, |
-.error { |
- color: {{g.paperInput.invalidColor}}; |
-} |
- |
-:host(.invalid) .unfocused-underline, |
-:host(.invalid) .focused-underline { |
- background-color: {{g.paperInput.invalidColor}}; |
-} |
- |
-</core-style> |
- |
-<polymer-element name="paper-input-decorator" layout vertical |
- on-transitionEnd="{{transitionEndAction}}" on-webkitTransitionEnd="{{transitionEndAction}}" |
- on-input="{{inputAction}}" |
- on-down="{{downAction}}"> |
- |
- <template> |
- |
- <link href="paper-input-decorator.css" rel="stylesheet"> |
- <core-style ref="paper-input-decorator"></core-style> |
- |
- <div class="floated-label" aria-hidden="true" hidden?="{{!floatingLabel}}" invisible?="{{!floatingLabelVisible || labelAnimated}}"> |
- <!-- needed for floating label animation measurement --> |
- <span id="floatedLabelText" class="label-text">{{label}}</span> |
- </div> |
- |
- <div class="input-body" flex auto relative> |
- |
- <div class="label" fit invisible aria-hidden="true"> |
- <!-- needed for floating label animation measurement --> |
- <span id="labelText" class="label-text" invisible?="{{!_labelVisible}}" animated?="{{labelAnimated}}">{{label}}</span> |
- </div> |
- |
- <content></content> |
- |
- </div> |
- |
- <div id="underline" class="underline" relative> |
- <div class="unfocused-underline" fit invisible?="{{disabled}}"></div> |
- <div id="focusedUnderline" class="focused-underline" fit invisible?="{{!focused}}" animated?="{{underlineAnimated}}"></div> |
- </div> |
- |
- <div class="error" layout horizontal center hidden?="{{!isInvalid}}"> |
- <div class="error-text" flex auto role="alert" aria-hidden="{{!isInvalid}}">{{error}}</div> |
- <core-icon class="error-icon" icon="warning"></core-icon> |
- </div> |
- |
- </template> |
- |
- <script> |
- |
- (function() { |
- |
- var paperInput = CoreStyle.g.paperInput = CoreStyle.g.paperInput || {}; |
- |
- paperInput.labelColor = '#757575'; |
- paperInput.focusedColor = '#4059a9'; |
- paperInput.invalidColor = '#d34336'; |
- |
- Polymer({ |
- |
- publish: { |
- |
- /** |
- * The label for this input. It normally appears as grey text inside |
- * the text input and disappears once the user enters text. |
- * |
- * @attribute label |
- * @type string |
- * @default '' |
- */ |
- label: '', |
- |
- /** |
- * If true, the label will "float" above the text input once the |
- * user enters text instead of disappearing. |
- * |
- * @attribute floatingLabel |
- * @type boolean |
- * @default false |
- */ |
- floatingLabel: false, |
- |
- /** |
- * Set to true to style the element as disabled. |
- * |
- * @attribute disabled |
- * @type boolean |
- * @default false |
- */ |
- disabled: {value: false, reflect: true}, |
- |
- /** |
- * Use this property to override the automatic label visibility. |
- * If this property is set to `true` or `false`, the label visibility |
- * will respect this value instead of be based on whether there is |
- * a non-null value in the input. |
- * |
- * @attribute labelVisible |
- * @type boolean |
- * @default false |
- */ |
- labelVisible: null, |
- |
- /** |
- * Set this property to true to show the error message. |
- * |
- * @attribute isInvalid |
- * @type boolean |
- * @default false |
- */ |
- isInvalid: false, |
- |
- /** |
- * The message to display if the input value fails validation. If this |
- * is unset or the empty string, a default message is displayed depending |
- * on the type of validation error. |
- * |
- * @attribute error |
- * @type string |
- */ |
- error: '', |
- |
- focused: {value: false, reflect: true} |
- |
- }, |
- |
- computed: { |
- floatingLabelVisible: 'floatingLabel && !_labelVisible', |
- _labelVisible: '(labelVisible === true || labelVisible === false) ? labelVisible : _autoLabelVisible' |
- }, |
- |
- ready: function() { |
- // Delegate focus/blur events |
- Polymer.addEventListener(this, 'focus', this.focusAction.bind(this), true); |
- Polymer.addEventListener(this, 'blur', this.blurAction.bind(this), true); |
- }, |
- |
- attached: function() { |
- this.input = this.querySelector('input,textarea'); |
- |
- this.mo = new MutationObserver(function() { |
- this.input = this.querySelector('input,textarea'); |
- }.bind(this)); |
- this.mo.observe(this, {childList: true}); |
- }, |
- |
- detached: function() { |
- this.mo.disconnect(); |
- this.mo = null; |
- }, |
- |
- prepareLabelTransform: function() { |
- var toRect = this.$.floatedLabelText.getBoundingClientRect(); |
- var fromRect = this.$.labelText.getBoundingClientRect(); |
- if (toRect.width !== 0) { |
- var sy = toRect.height / fromRect.height; |
- this.$.labelText.cachedTransform = |
- 'scale3d(' + (toRect.width / fromRect.width) + ',' + sy + ',1) ' + |
- 'translate3d(0,' + (toRect.top - fromRect.top) / sy + 'px,0)'; |
- } |
- }, |
- |
- animateFloatingLabel: function() { |
- if (!this.floatingLabel || this.labelAnimated) { |
- return false; |
- } |
- |
- if (!this.$.labelText.cachedTransform) { |
- this.prepareLabelTransform(); |
- } |
- |
- // If there's still no cached transform, the input is invisible so don't |
- // do the animation. |
- if (!this.$.labelText.cachedTransform) { |
- return false; |
- } |
- |
- this.labelAnimated = true; |
- // Handle interrupted animation |
- this.async(function() { |
- this.transitionEndAction(); |
- }, null, 250); |
- |
- if (this._labelVisible) { |
- // Handle if the label started out floating |
- if (!this.$.labelText.style.webkitTransform && !this.$.labelText.style.transform) { |
- this.$.labelText.style.webkitTransform = this.$.labelText.cachedTransform; |
- this.$.labelText.style.transform = this.$.labelText.cachedTransform; |
- this.$.labelText.offsetTop; |
- } |
- this.$.labelText.style.webkitTransform = ''; |
- this.$.labelText.style.transform = ''; |
- } else { |
- this.$.labelText.style.webkitTransform = this.$.labelText.cachedTransform; |
- this.$.labelText.style.transform = this.$.labelText.cachedTransform; |
- this.input.placeholder = ''; |
- } |
- |
- return true; |
- }, |
- |
- _labelVisibleChanged: function(old) { |
- // do not do the animation on first render |
- if (old !== undefined) { |
- if (!this.animateFloatingLabel()) { |
- this.updateInputLabel(this.input, this.label); |
- } |
- } |
- }, |
- |
- labelVisibleChanged: function() { |
- if (this.labelVisible === 'true') { |
- this.labelVisible = true; |
- } else if (this.labelVisible === 'false') { |
- this.labelVisible = false; |
- } |
- }, |
- |
- labelChanged: function() { |
- if (this.input) { |
- this.updateInputLabel(this.input, this.label); |
- } |
- }, |
- |
- isInvalidChanged: function() { |
- this.classList.toggle('invalid', this.isInvalid); |
- }, |
- |
- focusedChanged: function() { |
- this.updateLabelVisibility(this.input && this.input.value); |
- }, |
- |
- inputChanged: function(old) { |
- if (this.input) { |
- this.updateLabelVisibility(this.input.value); |
- this.updateInputLabel(this.input, this.label); |
- } |
- if (old) { |
- this.updateInputLabel(old, ''); |
- } |
- }, |
- |
- focusAction: function() { |
- this.focused = true; |
- }, |
- |
- blurAction: function(e) { |
- this.focused = false; |
- }, |
- |
- /** |
- * Updates the label visibility based on a value. This is handled automatically |
- * if the user is typing, but if you imperatively set the input value you need |
- * to call this function. |
- * |
- * @method updateLabelVisibility |
- * @param {string} value |
- */ |
- updateLabelVisibility: function(value) { |
- var v = (value !== null && value !== undefined) ? String(value) : value; |
- this._autoLabelVisible = (!this.focused && !v) || (!this.floatingLabel && !v); |
- }, |
- |
- updateInputLabel: function(input, label) { |
- if (this._labelVisible) { |
- this.input.placeholder = this.label; |
- } else { |
- this.input.placeholder = ''; |
- } |
- if (label) { |
- input.setAttribute('aria-label', label); |
- } else { |
- input.removeAttribute('aria-label'); |
- } |
- }, |
- |
- inputAction: function(e) { |
- this.updateLabelVisibility(e.target.value); |
- }, |
- |
- downAction: function(e) { |
- if (this.disabled) { |
- return; |
- } |
- |
- if (this.focused) { |
- return; |
- } |
- |
- if (this.input) { |
- this.input.focus(); |
- e.preventDefault(); |
- } |
- |
- // The underline spills from the tap location |
- var rect = this.$.underline.getBoundingClientRect(); |
- var right = e.x - rect.left; |
- this.$.focusedUnderline.style.mozTransformOrigin = right + 'px'; |
- this.$.focusedUnderline.style.webkitTransformOrigin = right + 'px '; |
- this.$.focusedUnderline.style.transformOriginX = right + 'px'; |
- |
- // Animations only run when the user interacts with the input |
- this.underlineAnimated = true; |
- |
- // Handle interrupted animation |
- this.async(function() { |
- this.transitionEndAction(); |
- }, null, 250); |
- }, |
- |
- transitionEndAction: function() { |
- this.underlineAnimated = false; |
- this.labelAnimated = false; |
- if (this._labelVisible) { |
- this.input.placeholder = this.label; |
- } |
- } |
- |
- }); |
- |
- }()); |
- |
- </script> |
- |
-</polymer-element> |