fix(notched-outline): Fix label overflow

packages/mdc-notched-outline/README.md

@@ -104,6 +104,7 @@ Method Signature | Description
 `addClass(className: string) => void` | Adds a class to the notched outline element.
 `removeClass(className: string) => void` | Removes a class from the notched outline element.
 `setNotchWidthProperty(width: number) => void` | Sets the width of the notch in pixels.
+`removeNotchWidthProperty() => void` | Removes the width property from the notch element.
 
 ### `MDCNotchedOutlineFoundation`
 

packages/mdc-notched-outline/adapter.js

@@ -51,6 +51,11 @@ class MDCNotchedOutlineAdapter {
    * @param {number} width
    */
   setNotchWidthProperty(width) {}
+
+  /**
+   * Removes the width style property from the notch element.
+   */
+  removeNotchWidthProperty() {}
 }
 
 export default MDCNotchedOutlineAdapter;

packages/mdc-notched-outline/foundation.js

@@ -55,6 +55,7 @@ class MDCNotchedOutlineFoundation extends MDCFoundation {
       addClass: () => {},
       removeClass: () => {},
       setNotchWidthProperty: () => {},
+      removeNotchWidthProperty: () => {},
     });
   }
 
@@ -87,7 +88,7 @@ class MDCNotchedOutlineFoundation extends MDCFoundation {
   closeNotch() {
     const {OUTLINE_NOTCHED} = MDCNotchedOutlineFoundation.cssClasses;
     this.adapter_.removeClass(OUTLINE_NOTCHED);
-    this.adapter_.setNotchWidthProperty(0);
+    this.adapter_.removeNotchWidthProperty();
   }
 }
 

packages/mdc-notched-outline/index.js

@@ -85,7 +85,8 @@ class MDCNotchedOutline extends MDCComponent {
       /** @type {!MDCNotchedOutlineAdapter} */ (Object.assign({
         addClass: (className) => this.root_.classList.add(className),
         removeClass: (className) => this.root_.classList.remove(className),
-        setNotchWidthProperty: (width) => this.notchElement_.style.setProperty('width', width > 0 ? width + 'px' : '0'),
+        setNotchWidthProperty: (width) => this.notchElement_.style.setProperty('width', width + 'px'),
+        removeNotchWidthProperty: () => this.notchElement_.style.removeProperty('width'),
       })));
   }
 }

packages/mdc-notched-outline/mdc-notched-outline.scss

@@ -35,6 +35,7 @@
     left: 0;
     box-sizing: border-box;
     width: 100%;
+    max-width: 100%;
     height: 100%;
     /* @noflip */
     text-align: left;
@@ -68,14 +69,22 @@
     }
 
     &__notch {
+      flex: 0 0 auto;
       width: auto;
+      max-width: 100%;
     }
 
     .mdc-floating-label {
       display: inline-block;
       position: relative;
       top: 17px;
       bottom: auto;
+      max-width: 100%;
+    }
+
+    &--upgraded .mdc-floating-label--float-above {
+      max-width: calc(100% / .75);
+      text-overflow: clip;
     }
   }
 

test/screenshot/golden.json

@@ -1612,6 +1612,15 @@
       "desktop_windows_ie@11": "https://storage.googleapis.com/mdc-web-screenshot-tests/travis/2018/11/21/19_18_38_795/spec/mdc-textfield/issues/3332.html.windows_ie_11.png"
     }
   },
+  "spec/mdc-textfield/issues/4170.html": {
+    "public_url": "https://storage.googleapis.com/mdc-web-screenshot-tests/travis/2018/12/12/22_24_38_091/spec/mdc-textfield/issues/4170.html?utm_source=golden_json",
+    "screenshots": {
+      "desktop_windows_chrome@latest": "https://storage.googleapis.com/mdc-web-screenshot-tests/travis/2018/12/12/22_24_38_091/spec/mdc-textfield/issues/4170.html.windows_chrome_71.png",
+      "desktop_windows_edge@latest": "https://storage.googleapis.com/mdc-web-screenshot-tests/travis/2018/12/12/22_24_38_091/spec/mdc-textfield/issues/4170.html.windows_edge_17.png",
+      "desktop_windows_firefox@latest": "https://storage.googleapis.com/mdc-web-screenshot-tests/travis/2018/12/12/22_24_38_091/spec/mdc-textfield/issues/4170.html.windows_firefox_63.png",
+      "desktop_windows_ie@11": "https://storage.googleapis.com/mdc-web-screenshot-tests/travis/2018/12/12/22_24_38_091/spec/mdc-textfield/issues/4170.html.windows_ie_11.png"
+    }
+  },
   "spec/mdc-textfield/mixins/outline-shape-radius.html": {
     "public_url": "https://storage.googleapis.com/mdc-web-screenshot-tests/travis/2018/11/30/05_20_17_198/spec/mdc-textfield/mixins/outline-shape-radius.html?utm_source=golden_json",
     "screenshots": {

test/screenshot/spec/mdc-textfield/issues/4170.html

@@ -0,0 +1,105 @@
+<!DOCTYPE html>
+<!--
+  Copyright 2018 Google Inc.
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+-->
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Textarea Text Field - Long Label - MDC Web Screenshot Test</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" href="../../../out/mdc.textfield.css">
+    <link rel="stylesheet" href="../../../out/mdc.typography.css">
+    <link rel="stylesheet" href="../../../out/spec/fixture.css">
+    <link rel="stylesheet" href="../../../out/spec/mdc-textfield/fixture.css">
+
+    <!-- Global site tag (gtag.js) - Google Analytics -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=UA-118996389-2"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+      gtag('config', 'UA-118996389-2');
+    </script>
+  </head>
+
+  <body class="test-container">
+    <main class="test-viewport test-viewport--mobile">
+      <div class="test-layout">
+
+        <div class="test-cell test-cell--textarea">
+          <div class="mdc-text-field mdc-text-field--textarea">
+            <textarea id="full-width-textarea"
+                      class="mdc-text-field__input test-text-field__input"
+                      rows="2"></textarea>
+            <div class="mdc-notched-outline">
+              <div class="mdc-notched-outline__leading"></div>
+              <div class="mdc-notched-outline__notch">
+                <label for="full-width-textarea" class="mdc-floating-label">Textarea Label That Is Really Really Really Really Long</label>
+              </div>
+              <div class="mdc-notched-outline__trailing"></div>
+            </div>
+          </div>
+        </div>
+
+        <div class="test-cell test-cell--textarea">
+          <div class="mdc-text-field mdc-text-field--textarea">
+            <textarea id="full-width-textarea-filled"
+                      class="mdc-text-field__input test-text-field__input"
+                      rows="2">Xyz</textarea>
+            <div class="mdc-notched-outline mdc-notched-outline--notched">
+              <div class="mdc-notched-outline__leading"></div>
+              <div class="mdc-notched-outline__notch">
+                <label for="full-width-textarea-filled" class="mdc-floating-label mdc-floating-label--float-above">Textarea Label That Is Really Really Really Really Long</label>
+              </div>
+              <div class="mdc-notched-outline__trailing"></div>
+            </div>
+          </div>
+        </div>
+
+        <div class="test-cell test-cell--textarea">
+          <div class="mdc-text-field mdc-text-field--textarea">
+            <!-- htmllint-disable -->
+            <textarea id="full-width-textarea-long-filled"
+                      class="mdc-text-field__input test-text-field__input"
+                      rows="2">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur rhoncus ac risus a eleifend. Phasellus dictum luctus leo quis ultricies. Vivamus fringilla vehicula turpis eu eleifend. Donec ultricies, est a scelerisque laoreet, arcu eros commodo nunc, sit amet hendrerit diam nisi id velit. Suspendisse porta nibh orci. Donec velit nisl, accumsan vitae eros a, consectetur interdum eros. Aenean dapibus vulputate semper. Aliquam finibus nec leo sed ultricies. Integer luctus convallis risus. Etiam suscipit suscipit ante vel volutpat. Ut venenatis dapibus elit dictum fringilla.</textarea>
+            <div class="mdc-notched-outline mdc-notched-outline--notched">
+              <div class="mdc-notched-outline__leading"></div>
+              <div class="mdc-notched-outline__notch">
+                <label for="full-width-textarea-long-filled" class="mdc-floating-label mdc-floating-label--float-above">Textarea Label That Is Really Really Really Really Long</label>
+              </div>
+              <div class="mdc-notched-outline__trailing"></div>
+            </div>
+            <!-- htmllint-enable -->
+          </div>
+        </div>
+
+      </div>
+    </main>
+
+    <!-- Automatically provides/replaces `Promise` if missing or broken. -->
+    <script src="https://cdn.jsdelivr.net/npm/es6-promise@4/dist/es6-promise.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/es6-promise@4/dist/es6-promise.auto.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/fontfaceobserver/2.0.13/fontfaceobserver.standalone.js"></script>
+    <script src="../../../out/material-components-web.js"></script>
+    <script src="../../../out/spec/fixture.js"></script>
+    <script src="../../../out/spec/mdc-textfield/fixture.js"></script>
+  </body>
+</html>

test/unit/mdc-notched-outline/foundation.test.js

@@ -46,7 +46,7 @@ test('exports strings', () => {
 
 test('defaultAdapter returns a complete adapter implementation', () => {
   verifyDefaultAdapter(MDCNotchedOutlineFoundation, [
-    'addClass', 'removeClass', 'setNotchWidthProperty',
+    'addClass', 'removeClass', 'setNotchWidthProperty', 'removeNotchWidthProperty',
   ]);
 });
 
@@ -60,9 +60,9 @@ test('#notch adds the notched class and sets the width of the element', () => {
   td.verify(mockAdapter.addClass(MDCNotchedOutlineFoundation.cssClasses.OUTLINE_NOTCHED));
 });
 
-test('#closeNotch removes the notch selector and resets the width to 0', () => {
+test('#closeNotch removes the notch selector and removes the width property', () => {
   const {foundation, mockAdapter} = setupTest();
   foundation.closeNotch();
   td.verify(mockAdapter.removeClass(MDCNotchedOutlineFoundation.cssClasses.OUTLINE_NOTCHED));
-  td.verify(mockAdapter.setNotchWidthProperty(0));
+  td.verify(mockAdapter.removeNotchWidthProperty());
 });

test/unit/mdc-notched-outline/mdc-notched-outline.test.js

@@ -55,13 +55,14 @@ test('adapter#addClass adds a class to the root element', () => {
 test('adapter#removeClass removes a class to the root element', () => {
   const {root, component} = setupTest();
   component.getDefaultFoundation().adapter_.removeClass('foo');
-  assert.isFalse(root.classList.contains('foo'));
+  component.getDefaultFoundation().adapter_.removeNotchWidthProperty();
+  const path = root.querySelector('.mdc-notched-outline__notch');
+  assert.equal('', path.style.width);
 });
 
 test('#adapter.setNotchWidthProperty sets the width property on the notched element', () => {
   const {root, component} = setupTest();
-  component.getDefaultFoundation().adapter_.setNotchWidthProperty(0);
+  component.getDefaultFoundation().adapter_.setNotchWidthProperty(50);
   const path = root.querySelector('.mdc-notched-outline__notch');
-  assert.equal('0px', path.style.width);
+  assert.equal('50px', path.style.width);
 });
-