Revert change to design. Go back to scrollable page

5 files changed, 133 insertions, 170 deletions

diff --git a/app/assets/javascripts/build.js b/app/assets/javascripts/build.js
index 60103155ce0..1dfa064acfd 100644
--- a/app/assets/javascripts/build.js
+++ b/app/assets/javascripts/build.js
@@ -13,25 +13,21 @@ window.Build = (function () {
     this.options = options || $('.js-build-options').data();
 
     this.pageUrl = this.options.pageUrl;
-    this.buildUrl = this.options.buildUrl;
     this.buildStatus = this.options.buildStatus;
     this.state = this.options.logState;
     this.buildStage = this.options.buildStage;
     this.$document = $(document);
     this.logBytes = 0;
-    this.scrollOffsetPadding = 30;
     this.hasBeenScrolled = false;
 
     this.updateDropdown = this.updateDropdown.bind(this);
     this.getBuildTrace = this.getBuildTrace.bind(this);
-    this.scrollToBottom = this.scrollToBottom.bind(this);
 
-    this.$body = $('body');
     this.$buildTrace = $('#build-trace');
     this.$buildRefreshAnimation = $('.js-build-refresh');
     this.$truncatedInfo = $('.js-truncated-info');
     this.$buildTraceOutput = $('.js-build-output');
-    this.$scrollContainer = $('.js-scroll-container');
+    this.$topBar = $('.js-top-bar');
 
     // Scroll controllers
     this.$scrollTopBtn = $('.js-scroll-up');
@@ -63,13 +59,22 @@ window.Build = (function () {
       .off('click')
       .on('click', this.scrollToBottom.bind(this));
 
-    const scrollThrottled = _.throttle(this.toggleScroll.bind(this), 100);
+    this.scrollThrottled = _.throttle(this.toggleScroll.bind(this), 100);
 
-    this.$scrollContainer
+    $(window)
       .off('scroll')
       .on('scroll', () => {
-        this.hasBeenScrolled = true;
-        scrollThrottled();
+        const contentHeight = this.$buildTraceOutput.prop('scrollHeight');
+        if (contentHeight > this.windowSize) {
+          // means the user did not scroll, the content was updated.
+          this.windowSize = contentHeight;
+        } else {
+          // User scrolled
+          this.hasBeenScrolled = true;
+          this.toggleScrollAnimation(false);
+        }
+
+        this.scrollThrottled();
       });
 
     $(window)
@@ -77,59 +82,73 @@ window.Build = (function () {
       .on('resize.build', _.throttle(this.sidebarOnResize.bind(this), 100));
 
     this.updateArtifactRemoveDate();
+    this.initAffixTopArea();
 
-    // eslint-disable-next-line
-    this.getBuildTrace()
-      .then(() => this.toggleScroll())
-      .then(() => {
-        if (!this.hasBeenScrolled) {
-          this.scrollToBottom();
-        }
-      })
-      .then(() => this.verifyTopPosition());
+    this.getBuildTrace();
   }
 
+  Build.prototype.initAffixTopArea = function () {
+    /**
+      If the browser does not support position sticky, it returns the position as static.
+      If the browser does support sticky, then we allow the browser to handle it, if not
+      then we default back to Bootstraps affix
+    **/
+    if (this.$topBar.css('position') !== 'static') return;
+
+    const offsetTop = this.$buildTrace.offset().top;
+
+    this.$topBar.affix({
+      offset: {
+        top: offsetTop,
+      },
+    });
+  };
+
   Build.prototype.canScroll = function () {
-    return (this.$scrollContainer.prop('scrollHeight') - this.scrollOffsetPadding) > this.$scrollContainer.height();
+    return document.body.scrollHeight > window.innerHeight;
   };
 
-  /**
-   * |                          | Up       | Down     |
-   * |--------------------------|----------|----------|
-   * | on scroll bottom         | active   | disabled |
-   * | on scroll top            | disabled | active   |
-   * | no scroll                | disabled | disabled |
-   * | on.('scroll') is on top  | disabled | active   |
-   * | on('scroll) is on bottom | active   | disabled |
-   *
-   */
   Build.prototype.toggleScroll = function () {
-    const currentPosition = this.$scrollContainer.scrollTop();
-    const bottomScroll = currentPosition + this.$scrollContainer.innerHeight();
+    const currentPosition = document.body.scrollTop;
+    const windowHeight = window.innerHeight;
 
     if (this.canScroll()) {
-      if (currentPosition === 0) {
+      if (currentPosition > 0 &&
+        (document.body.scrollHeight - currentPosition !== windowHeight)) {
+      // User is in the middle of the log
+
+        this.toggleDisableButton(this.$scrollTopBtn, false);
+        this.toggleDisableButton(this.$scrollBottomBtn, false);
+      } else if (currentPosition === 0) {
+        // User is at Top of Build Log
+
         this.toggleDisableButton(this.$scrollTopBtn, true);
         this.toggleDisableButton(this.$scrollBottomBtn, false);
-      } else if (bottomScroll === this.$scrollContainer.prop('scrollHeight')) {
+      } else if (document.body.scrollHeight - currentPosition === windowHeight) {
+        // User is at the bottom of the build log.
+
         this.toggleDisableButton(this.$scrollTopBtn, false);
         this.toggleDisableButton(this.$scrollBottomBtn, true);
-      } else {
-        this.toggleDisableButton(this.$scrollTopBtn, false);
-        this.toggleDisableButton(this.$scrollBottomBtn, false);
       }
+    } else {
+      this.toggleDisableButton(this.$scrollTopBtn, true);
+      this.toggleDisableButton(this.$scrollBottomBtn, true);
     }
   };
 
-  Build.prototype.scrollToTop = function () {
+  Build.prototype.scrollDown = function () {
+    document.body.scrollTop = document.body.scrollHeight;
+  };
+
+  Build.prototype.scrollToBottom = function () {
+    this.scrollDown();
     this.hasBeenScrolled = true;
-    this.$scrollContainer.scrollTop(0);
     this.toggleScroll();
   };
 
-  Build.prototype.scrollToBottom = function () {
+  Build.prototype.scrollToTop = function () {
+    document.body.scrollTop = 0;
     this.hasBeenScrolled = true;
-    this.$scrollContainer.scrollTop(this.$scrollContainer.prop('scrollHeight'));
     this.toggleScroll();
   };
 
@@ -142,47 +161,6 @@ window.Build = (function () {
     this.$scrollBottomBtn.toggleClass('animate', toggle);
   };
 
-  /**
-   * Build trace top position depends on the space ocupied by the elments rendered before
-   */
-  Build.prototype.verifyTopPosition = function () {
-    const $buildPage = $('.build-page');
-
-    const $flashError = $('.alert-wrapper');
-    const $header = $('.build-header', $buildPage);
-    const $runnersStuck = $('.js-build-stuck', $buildPage);
-    const $startsEnvironment = $('.js-environment-container', $buildPage);
-    const $erased = $('.js-build-erased', $buildPage);
-    const prependTopDefault = 20;
-
-    // header + navigation + margin
-    let topPostion = 168;
-
-    if ($header.length) {
-      topPostion += $header.outerHeight();
-    }
-
-    if ($runnersStuck.length) {
-      topPostion += $runnersStuck.outerHeight();
-    }
-
-    if ($startsEnvironment.length) {
-      topPostion += $startsEnvironment.outerHeight() + prependTopDefault;
-    }
-
-    if ($erased.length) {
-      topPostion += $erased.outerHeight() + prependTopDefault;
-    }
-
-    if ($flashError.length) {
-      topPostion += $flashError.outerHeight() + prependTopDefault;
-    }
-
-    this.$buildTrace.css({
-      top: topPostion,
-    });
-  };
-
   Build.prototype.initSidebar = function () {
     this.$sidebar = $('.js-build-sidebar');
     this.$sidebar.niceScroll();
@@ -200,6 +178,8 @@ window.Build = (function () {
           this.state = log.state;
         }
 
+        this.windowSize = this.$buildTraceOutput.prop('scrollHeight');
+
         if (log.append) {
           this.$buildTraceOutput.append(log.html);
           this.logBytes += log.size;
@@ -227,14 +207,7 @@ window.Build = (function () {
           }
 
           Build.timeout = setTimeout(() => {
-            //eslint-disable-next-line
-            this.getBuildTrace()
-              .then(() => {
-                if (!this.hasBeenScrolled) {
-                  this.scrollToBottom();
-                }
-              })
-              .then(() => this.verifyTopPosition());
+            this.getBuildTrace();
           }, 4000);
         } else {
           this.$buildRefreshAnimation.remove();
@@ -247,7 +220,13 @@ window.Build = (function () {
       })
       .fail(() => {
         this.$buildRefreshAnimation.remove();
-      });
+      })
+      .then(() => {
+        if (!this.hasBeenScrolled) {
+          this.scrollDown();
+        }
+      })
+      .then(() => this.toggleScroll());
   };
 
   Build.prototype.shouldHideSidebarForViewport = function () {
@@ -259,14 +238,11 @@ window.Build = (function () {
     const shouldShow = typeof shouldHide === 'boolean' ? !shouldHide : undefined;
     const $toggleButton = $('.js-sidebar-build-toggle-header');
 
-    this.$buildTrace
-      .toggleClass('sidebar-expanded', shouldShow)
-      .toggleClass('sidebar-collapsed', shouldHide);
     this.$sidebar
       .toggleClass('right-sidebar-expanded', shouldShow)
       .toggleClass('right-sidebar-collapsed', shouldHide);
 
-    $('.js-build-page')
+    this.$topBar
       .toggleClass('sidebar-expanded', shouldShow)
       .toggleClass('sidebar-collapsed', shouldHide);
 
@@ -279,17 +255,10 @@ window.Build = (function () {
 
   Build.prototype.sidebarOnResize = function () {
     this.toggleSidebar(this.shouldHideSidebarForViewport());
-
-    this.verifyTopPosition();
-
-    if (this.canScroll()) {
-      this.toggleScroll();
-    }
   };
 
   Build.prototype.sidebarOnClick = function () {
     if (this.shouldHideSidebarForViewport()) this.toggleSidebar();
-    this.verifyTopPosition();
   };
 
   Build.prototype.updateArtifactRemoveDate = function () {
diff --git a/app/assets/javascripts/jobs/job_details_bundle.js b/app/assets/javascripts/jobs/job_details_bundle.js
index 939d17129de..f92e669414a 100644
--- a/app/assets/javascripts/jobs/job_details_bundle.js
+++ b/app/assets/javascripts/jobs/job_details_bundle.js
@@ -26,14 +26,6 @@ document.addEventListener('DOMContentLoaded', () => {
     mounted() {
       this.mediator.initBuildClass();
     },
-    updated() {
-      // Wait for flash message to be appended
-      Vue.nextTick(() => {
-        if (this.mediator.build) {
-          this.mediator.build.verifyTopPosition();
-        }
-      });
-    },
     render(createElement) {
       return createElement('job-header', {
         props: {
diff --git a/app/assets/stylesheets/pages/builds.scss b/app/assets/stylesheets/pages/builds.scss
index 9cff99b839c..23c06eca3c3 100644
--- a/app/assets/stylesheets/pages/builds.scss
+++ b/app/assets/stylesheets/pages/builds.scss
@@ -37,65 +37,77 @@
 }
 
 .build-page {
-  .sticky {
-    position: absolute;
-    left: 0;
-    right: 0;
+  .build-trace-container {
+    position: relative;
   }
 
-  .build-trace-container {
-    position: absolute;
-    top: 225px;
-    left: 15px;
-    bottom: 10px;
+  .build-trace {
     background: $black;
     color: $gray-darkest;
-    font-family: $monospace_font;
+    white-space: pre;
+    overflow-x: auto;
     font-size: 12px;
+    border-radius: 0;
+    border: none;
 
-    &.sidebar-expanded {
-      right: 305px;
+    .bash {
+      display: block;
     }
+  }
 
-    &.sidebar-collapsed {
-      right: 16px;
+  .top-bar {
+    height: 35px;
+    display: flex;
+    justify-content: flex-end;
+    background: $gray-light;
+    border: 1px solid $border-color;
+    color: $gl-text-color;
+    position: sticky;
+    position: -webkit-sticky;
+    top: 50px;
+
+    &.affix {
+      top: 50px;
     }
 
-    code {
-      background: $black;
-      color: $gray-darkest;
+    // with sidebar
+    &.affix.sidebar-expanded {
+      right: 306px;
+      left: 16px;
     }
 
-    .top-bar {
-      top: 0;
-      height: 35px;
-      display: flex;
-      justify-content: flex-end;
-      background: $gray-light;
-      border: 1px solid $border-color;
-      color: $gl-text-color;
+    // without sidebar
+    &.affix.sidebar-collapsed {
+      right: 16px;
+      left: 16px;
+    }
 
-      .truncated-info {
-        margin: 0 auto;
-        align-self: center;
+    &.affix-top {
+      position: absolute;
+      right: 0;
+      left: 0;
+    }
 
-        .truncated-info-size {
-          margin: 0 5px;
-        }
+    .truncated-info {
+      margin: 0 auto;
+      align-self: center;
 
-        .raw-link {
-          color: $gl-text-color;
-          margin-left: 5px;
-          text-decoration: underline;
-        }
+      .truncated-info-size {
+        margin: 0 5px;
+      }
+
+      .raw-link {
+        color: $gl-text-color;
+        margin-left: 5px;
+        text-decoration: underline;
       }
     }
 
     .controllers {
       display: flex;
-      align-self: center;
       font-size: 15px;
-      margin-bottom: 4px;
+      justify-content: center;
+      align-items: center;
 
       svg {
         height: 15px;
@@ -103,17 +115,9 @@
         fill: $gl-text-color;
       }
 
-      .controllers-buttons,
-      .btn-scroll {
-        color: $gl-text-color;
-        height: 15px;
-        vertical-align: middle;
-        padding: 0;
-        width: 12px;
-      }
-
       .controllers-buttons {
-        margin: 1px 10px;
+        color: $gl-text-color;
+        margin: 0 10px;
       }
 
       .btn-scroll.animate {
@@ -143,15 +147,6 @@
     }
   }
 
-  .bash {
-    top: 35px;
-    left: 10px;
-    bottom: 0;
-    padding: 10px 20px 20px 5px;
-    white-space: pre-wrap;
-    overflow: auto;
-  }
-
   .environment-information {
     border: 1px solid $border-color;
     padding: 8px $gl-padding 12px;
diff --git a/app/views/projects/jobs/show.html.haml b/app/views/projects/jobs/show.html.haml
index c73bae0a2c9..e9bc1068417 100644
--- a/app/views/projects/jobs/show.html.haml
+++ b/app/views/projects/jobs/show.html.haml
@@ -54,13 +54,14 @@
           - else
             Job has been erased #{time_ago_with_tooltip(@build.erased_at)}
 
-    .build-trace-container#build-trace
-      .top-bar.sticky
+    .build-trace-container.prepend-top-default
+      .top-bar.js-top-bar
         .js-truncated-info.truncated-info.hidden<
           Showing last
           %span.js-truncated-info-size.truncated-info-size><
           KiB of log -
           %a.js-raw-link.raw-link{ href: raw_namespace_project_job_path(@project.namespace, @project, @build) }>< Complete Raw
+
         .controllers
           - if @build.has_trace?
             = link_to raw_namespace_project_job_path(@project.namespace, @project, @build),
@@ -82,10 +83,12 @@
           .has-tooltip.controllers-buttons{ title: 'Scroll to bottom', data: { placement: 'top', container: 'body'} }
             %button.js-scroll-down.btn-scroll.btn-transparent.btn-blank{ type: 'button', disabled: true }
               = custom_icon('scroll_down')
-      .bash.sticky.js-scroll-container
-        %code.js-build-output
+
+      %pre.build-trace#build-trace
+        %code.bash.js-build-output
         .build-loader-animation.js-build-refresh
 
+
   = render "sidebar"
 
 .js-build-options{ data: javascript_build_options }
diff --git a/changelogs/unreleased/34531-remove-scroll.yml b/changelogs/unreleased/34531-remove-scroll.yml
new file mode 100644
index 00000000000..c3c5289f66f
--- /dev/null
+++ b/changelogs/unreleased/34531-remove-scroll.yml
@@ -0,0 +1,4 @@
+---
+title: Update jobs page output to have a scrollable page
+merge_request: 12587
+author: