From cf176019490a90368fa4dfa3f27ebb5459207994 Mon Sep 17 00:00:00 2001
From: Rob Eisenberg <rob@bluespire.com>
Date: Tue, 16 Sep 2014 16:05:55 -0400
Subject: [PATCH] feat(linear_progress): Add linear progress indicator

This linear progress directive displays a simple, animated loading bar. There are four display modes: determinate, indeterminate, buffer and query.

Closes #187
---
 config/build.config.js                        |   1 +
 src/base/_mixins.scss                         |   1 -
 src/components/linearProgress/README.md       |   1 +
 .../linearProgress/_linearProgress.scss       | 238 ++++++++++++++++++
 .../linearProgress/demo1/index.html           |  13 +
 src/components/linearProgress/demo1/script.js |  19 ++
 src/components/linearProgress/demo1/style.css |   3 +
 .../linearProgress/linearProgress.js          |  84 +++++++
 .../linearProgress/linearProgress.spec.js     |   4 +
 src/components/linearProgress/module.json     |  10 +
 src/main.scss                                 |   3 +-
 11 files changed, 375 insertions(+), 2 deletions(-)
 create mode 100644 src/components/linearProgress/README.md
 create mode 100644 src/components/linearProgress/_linearProgress.scss
 create mode 100644 src/components/linearProgress/demo1/index.html
 create mode 100644 src/components/linearProgress/demo1/script.js
 create mode 100644 src/components/linearProgress/demo1/style.css
 create mode 100644 src/components/linearProgress/linearProgress.js
 create mode 100644 src/components/linearProgress/linearProgress.spec.js
 create mode 100644 src/components/linearProgress/module.json

diff --git a/config/build.config.js b/config/build.config.js
index 1f187072bb7..f6ad91f31f4 100644
--- a/config/build.config.js
+++ b/config/build.config.js
@@ -92,6 +92,7 @@ module.exports = {
       'src/components/toolbar/toolbar.js',
       'src/components/whiteframe/whiteframe.js',
       'src/components/divider/divider.js',
+      'src/components/linearProgress/linearProgress.js',
 
       //Services
       'src/services/decorators.js',
diff --git a/src/base/_mixins.scss b/src/base/_mixins.scss
index aeb1059f8f6..7e6db5f5cce 100644
--- a/src/base/_mixins.scss
+++ b/src/base/_mixins.scss
@@ -71,7 +71,6 @@
   user-select: $val;
 }
 
-
 @mixin keyframes($name) {
   @-webkit-keyframes #{$name} {
     @content;
diff --git a/src/components/linearProgress/README.md b/src/components/linearProgress/README.md
new file mode 100644
index 00000000000..721f395ba40
--- /dev/null
+++ b/src/components/linearProgress/README.md
@@ -0,0 +1 @@
+Linear progress bars, created with the `<material-linear-progress>` directive.
\ No newline at end of file
diff --git a/src/components/linearProgress/_linearProgress.scss b/src/components/linearProgress/_linearProgress.scss
new file mode 100644
index 00000000000..37f53e0d617
--- /dev/null
+++ b/src/components/linearProgress/_linearProgress.scss
@@ -0,0 +1,238 @@
+$bar-height:5px;
+
+ material-linear-progress {
+  display: block;
+  width: 100%;
+  height: $bar-height;
+
+  .container {
+    overflow: hidden;
+    position: relative;
+    height: 0;
+    background-color: $color-blue-100;
+    top: $bar-height;
+    @include transition(all .3s linear);
+  }
+
+  .container.ready {
+    height: $bar-height;
+    top: 0;
+  }
+
+  .bar {
+    height: $bar-height;
+    background-color: $color-blue-500;
+    position: absolute;
+  }
+
+  .bar1, .bar2 {
+    @include transition(width 0.2s linear);
+  }
+
+  &[mode=determinate] {
+    .bar1 {
+      display: none;
+    }
+  }
+
+  &[mode=indeterminate] {
+    .bar1 {
+      left: 50%;
+      width: 10%;
+      @include animation(indeterminate1 5s infinite linear);
+    }
+
+    .bar2 {
+      left: 0%;
+      width: 0%;
+      @include animation(indeterminate2 5s infinite linear);
+    }
+  }
+
+  &[mode=buffer] {
+    .container {
+      background-color: transparent;
+    }
+
+    .dashed:before {
+      content: "";
+      display: block;
+      height: $bar-height;
+      width: 100%;
+      margin-top: 0px;
+      position: absolute;
+      background: radial-gradient(#d0d9ff 0%, #d0d9ff 20%, transparent 50%);
+      background-color: transparent;
+      background-size: 10px 10px;
+      background-position: 0px -23px;
+      @include animation(buffer 3s infinite linear);
+    }
+
+    .bar1 {
+      background-color: $color-blue-100;
+    }
+  }
+
+  &[mode=query] {
+    .bar2 {
+      left: 50%;
+      width: 10%;
+      @include animation(query .8s infinite cubic-bezier(0.390, 0.575, 0.565, 1.000));
+    }
+  }
+}
+
+@include keyframes(indeterminate1) {
+  0% {
+    width: 0%;
+    left: 0%;
+  }
+  10% {
+    width: 30%;
+    left: 100%;
+  }
+  19.99% {
+    width: 30%;
+    left: 100%;
+  }
+  20% {
+    width: 0%;
+    left: 0%;
+  }
+  30% {
+    width: 80%;
+    left: 100%;
+  }
+  30.01% {
+    width: 0%;
+    left: 0%;
+  }
+  40% {
+    width: 5%;
+    left: 30%;
+  }
+  50% {
+    width: 50%;
+    left: 100%;
+  }
+  50.01% {
+    width: 0%;
+    left: 0%;
+  }
+  60% {
+    width: 60%;
+    left: 20%;
+  }
+  70% {
+    width: 5%;
+    left: 100%;
+  }
+  70.01% {
+    width: 0%;
+    left: 0%;
+  }
+  80% {
+    width: 50%;
+    left: 30%;
+  }
+  90% {
+    width: 10%;
+    left: 80%;
+  }
+  100% {
+    width: 20%;
+    left: 100%;
+  }
+}
+
+@include keyframes(indeterminate2) {
+  0% {
+    width: 0%;
+    left: 0%;
+  }
+  10% {
+    width: 60%;
+  }
+  19.99% {
+    width: 40%;
+    left: 100%;
+  }
+  20% {
+    width: 0%;
+    left: 0%;
+  }
+  25% {
+    width: 10%;
+    left: 10%;
+  }
+  30% {
+    width: 40%;
+    left: 30%;
+  }
+  40% {
+    width: 60%;
+    left: 100%;
+  }
+  40.01% {
+    width: 0%;
+    left: 0%;
+  }
+  50% {
+    width: 10%;
+    left: 40%;
+  }
+  60% {
+    width: 30%;
+    left: 100%;
+  }
+  60.01% {
+    width: 0%;
+    left: 0%;
+  }
+  70% {
+    width: 10%;
+    left: 40%;
+  }
+  80% {
+    width: 5%;
+    left: 100%;
+  }
+  80.01% {
+    width: 0%;
+    left: 0%;
+  }
+  90% {
+    width: 70%;
+    left: 10%;
+  }
+  100% {
+    width: 10%;
+    left: 100%;
+  }
+}
+
+@include keyframes(query) {
+  0% {
+    width: 30%;
+    left: 70%;
+  }
+  100% {
+    width: 0%;
+    left: 0%;
+    opacity: 0;
+  }
+}
+
+@include keyframes(buffer) {
+  0% {
+    opacity: 1;
+    background-position: 0px -23px;
+  }
+  50% {
+    opacity: 0;
+  }
+  100% {
+    opacity: 1;
+    background-position: -200px -23px;
+  }
+}
\ No newline at end of file
diff --git a/src/components/linearProgress/demo1/index.html b/src/components/linearProgress/demo1/index.html
new file mode 100644
index 00000000000..7eeb8c21866
--- /dev/null
+++ b/src/components/linearProgress/demo1/index.html
@@ -0,0 +1,13 @@
+<div ng-controller="AppCtrl">
+  <h2>Determinate</h2>
+  <material-linear-progress mode="determinate" ng-value="determinateValue"></material-linear-progress>
+
+  <h2>Indeterminate</h2>
+  <material-linear-progress mode="indeterminate"></material-linear-progress>
+
+  <h2>Buffer</h2>
+  <material-linear-progress mode="buffer" value="{{determinateValue}}" secondaryValue="{{determinateValue2}}"></material-linear-progress>
+
+  <h2>Query Indeterminate and Determinate</h2>
+  <material-linear-progress mode="{{mode}}" value="{{determinateValue}}"></material-linear-progress>
+</div>
\ No newline at end of file
diff --git a/src/components/linearProgress/demo1/script.js b/src/components/linearProgress/demo1/script.js
new file mode 100644
index 00000000000..595a4c7f7a4
--- /dev/null
+++ b/src/components/linearProgress/demo1/script.js
@@ -0,0 +1,19 @@
+angular.module('linearProgressDemo1', ['ngMaterial'])
+  .controller('AppCtrl', ['$scope', '$interval', function($scope, $interval) {
+    $scope.mode = 'query';
+    $scope.determinateValue = 30;
+    $scope.determinateValue2 = 30;
+
+    $interval(function() {
+      $scope.determinateValue += 1;
+      $scope.determinateValue2 += 1.5;
+      if ($scope.determinateValue > 100) {
+        $scope.determinateValue = 30;
+        $scope.determinateValue2 = 30;
+      }
+    }, 100, 0, true);
+
+    $interval(function() {
+      $scope.mode = ($scope.mode == 'query' ? 'determinate' : 'query');
+    }, 7200, 0, true);
+  }]);
\ No newline at end of file
diff --git a/src/components/linearProgress/demo1/style.css b/src/components/linearProgress/demo1/style.css
new file mode 100644
index 00000000000..76e6846d734
--- /dev/null
+++ b/src/components/linearProgress/demo1/style.css
@@ -0,0 +1,3 @@
+body {
+  padding: 20px;
+}
\ No newline at end of file
diff --git a/src/components/linearProgress/linearProgress.js b/src/components/linearProgress/linearProgress.js
new file mode 100644
index 00000000000..b89bd9fa3ee
--- /dev/null
+++ b/src/components/linearProgress/linearProgress.js
@@ -0,0 +1,84 @@
+/**
+ * @ngdoc module
+ * @name material.components.linearProgress
+ * @description Linear Progress module!
+ */
+angular.module('material.components.linearProgress', [
+  'material.animations',
+  'material.services.aria'
+])
+  .directive('materialLinearProgress', ['$timeout', MaterialLinearProgressDirective]);
+
+/**
+ * @ngdoc directive
+ * @name materialLinearProgress
+ * @module material.components.linearProgress
+ * @restrict E
+ *
+ * @description
+ * The linear progress directive is used to make loading content in your app as delightful and painless as possible by minimizing the amount of visual change a user sees before they can view and interact with content. Each operation should only be represented by one activity indicator—for example, one refresh operation should not display both a refresh bar and an activity circle.
+ *
+ * For operations where the percentage of the operation completed can be determined, use a determinate indicator. They give users a quick sense of how long an operation will take.
+ *
+ * For operations where the user is asked to wait a moment while something finishes up, and it’s not necessary to expose what's happening behind the scenes and how long it will take, use an indeterminate indicator.
+ *
+ * @param {string} mode Select from one of four modes: determinate, indeterminate, buffer or query.
+ * @param {number=} value In determinate and buffer modes, this number represents the percentage of the primary progress bar. Default: 0
+ * @param {number=} secondaryValue In the buffer mode, this number represents the precentage of the secondary progress bar. Default: 0
+ *
+ * @usage
+ * <hljs lang="html">
+ * <material-linear-progress mode="determinate" value="..."></material-linear-progress>
+ *
+ * <material-linear-progress mode="determinate" ng-value="..."></material-linear-progress>
+ *
+ * <material-linear-progress mode="indeterminate"></material-linear-progress>
+ *
+ * <material-linear-progress mode="buffer" value="..." secondaryValue="..."></material-linear-progress>
+ *
+ * <material-linear-progress mode="query"></material-linear-progress>
+ * </hljs>
+ */
+function MaterialLinearProgressDirective($timeout) {
+  return {
+    restrict: 'E',
+    template: '<div class="container">' +
+      '<div class="dashed"></div>' +
+      '<div class="bar bar1"></div>' +
+      '<div class="bar bar2"></div>' +
+      '</div>',
+    link: function(scope, element, attr) {
+      var bar1 = angular.element(element[0].querySelector('.bar1')),
+          bar2 = angular.element(element[0].querySelector('.bar2')),
+          container = angular.element(element[0].querySelector('.container'));
+
+      attr.$observe('value', function(value) {
+        bar2.css('width', clamp(value).toString() + '%');
+      });
+
+      attr.$observe('secondaryvalue', function(value) {
+        bar1.css('width', clamp(value).toString() + '%');
+      });
+
+      $timeout(function() {
+        container.addClass('ready');
+      });
+    }
+  };
+}
+
+// **********************************************************
+// Private Methods
+// **********************************************************
+
+function clamp(value) {
+  if (value > 100) {
+    return 100;
+  }
+
+  if (value < 0) {
+    return 0;
+  }
+
+  return value || 0;
+}
\ No newline at end of file
diff --git a/src/components/linearProgress/linearProgress.spec.js b/src/components/linearProgress/linearProgress.spec.js
new file mode 100644
index 00000000000..638626f8a88
--- /dev/null
+++ b/src/components/linearProgress/linearProgress.spec.js
@@ -0,0 +1,4 @@
+describe('materialLinearProgress', function() {
+
+
+});
\ No newline at end of file
diff --git a/src/components/linearProgress/module.json b/src/components/linearProgress/module.json
new file mode 100644
index 00000000000..c42a785927e
--- /dev/null
+++ b/src/components/linearProgress/module.json
@@ -0,0 +1,10 @@
+{
+  "module": "material.components.linearProgress",
+  "name": "Linear Progress",
+  "demos": {
+    "demo1": {
+      "name": "Linear Progress Basic Usage",
+      "files": ["demo1/*"]
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/main.scss b/src/main.scss
index 8936e05a808..ffa4a9465b7 100644
--- a/src/main.scss
+++ b/src/main.scss
@@ -30,4 +30,5 @@
 "components/tabs/tabs",
 "components/list/list",
 "components/divider/divider",
-"components/whiteframe/whiteframe";
+"components/whiteframe/whiteframe",
+"components/linearProgress/linearProgress";