[yelp-xsl/wip/html5] Implement uix:overlay with pure JS, plus fixes and cleanups

[Shaun McCance <shaunm src gnome org>]

commit 3241c50bbabd16da7cae5002a46d3fadc722809f
Author: Shaun McCance <shaunm gnome org>
Date:   Sat Apr 8 09:18:08 2017 -0400

    Implement uix:overlay with pure JS, plus fixes and cleanups

 xslt/common/html.xsl                |    4 +
 xslt/mallard/html/mal2html-page.xsl |  120 ++++++++++++++++++++---------------
 xslt/mallard/html/mal2html-ui.xsl   |   48 +++++++-------
 3 files changed, 96 insertions(+), 76 deletions(-)
---
diff --git a/xslt/common/html.xsl b/xslt/common/html.xsl
index dc11dd7..8c1d4d7 100644
--- a/xslt/common/html.xsl
+++ b/xslt/common/html.xsl
@@ -2364,6 +2364,10 @@ window.addEventListener('load', function() {
 }, false);
 function yelp_media_init (media) {
   media.removeAttribute('controls');
+  if (media.parentNode.classList.contains('links-tile-img')) {
+    return;
+  }
+
   media.addEventListener('click', function () {
     if (media.paused)
       media.play();
diff --git a/xslt/mallard/html/mal2html-page.xsl b/xslt/mallard/html/mal2html-page.xsl
index 09f17b2..8c70a3a 100644
--- a/xslt/mallard/html/mal2html-page.xsl
+++ b/xslt/mallard/html/mal2html-page.xsl
@@ -969,23 +969,37 @@ ul.links-uix-hover a:hover img, ul.links-uix-hover a:focus img {
 
 <!-- uix:overlay -->
 div.ui-overlay-screen {
-  display: none;
   position: fixed;
   margin: 0;
   left: 0; top: 0;
   width: 100%; height: 100%;
   background: </xsl:text><xsl:value-of select="$color.fg.dark"/><xsl:text>;
-  opacity: 0.6;
+  animation-name: yelp-overlay-screen;
+  animation-duration: 0.8s;
+  animation-fill-mode: forwards;
+}
+@keyframes yelp-overlay-screen {
+  from { opacity: 0.0; }
+  to   { opacity: 0.6; }
 }
 div.ui-overlay {
   display: none;
   position: fixed;
   text-align: center;
-  left: 0;
   top: 20px;
-  width: 100%;
+  left: 50%;
+  transform: translateX(-50%);
   z-index: 10;
 }
+div.ui-overlay-show {
+  animation-name: yelp-overlay-slide;
+  animation-duration: 0.8s;
+  animation-fill-mode: forwards;
+}
+@keyframes yelp-overlay-slide {
+  from { transform: translateY(-400px) translateX(-50%); }
+  to   { transform: translateY(0) translateX(-50%); }
+}
 div.ui-overlay > div.inner {
   display: inline-block;
   padding: 8px;
@@ -1408,56 +1422,58 @@ span.status-stub, span.status-draft, span.status-incomplete, span.status-outdate
 <xsl:template mode="html.js.mode" match="mal:page">
   <xsl:call-template name="mal2html.facets.js"/>
 <xsl:text><![CDATA[
-$(document).ready(function () {
-  $('a.ui-overlay').each(function () {
-    $(this).click(function () {
-      var overlay = $(this).parent('div').children('div.ui-overlay');
-      var inner = overlay.children('div.inner');
-      var close = inner.children('a.ui-overlay-close');
-      var media = inner.find('audio, video');
-      var screen = $('div.ui-overlay-screen');
-      if (screen.length == 0) {
-        screen = $('<div class="ui-overlay-screen"></div>');
-        $('body').append(screen);
-      }
-      var hideoverlay = function () {
-        if (media.length > 0)
-          media[0].pause();
-        $(document).unbind('keydown.yelp-ui-overlay');
-        close.unbind('click');
-        screen.unbind('click');
-        screen.fadeOut('slow');
-        overlay.unbind('click');
-        overlay.slideUp('fast');
-        return false;
-      };
-      screen.click(hideoverlay);
-      close.click(hideoverlay);
-      $(document).bind('keydown.yelp-ui-overlay', function (event) {
-        if (event.which == 27) {
-          hideoverlay();
+document.addEventListener('DOMContentLoaded', function() {
+  var overlays = document.querySelectorAll('a.ui-overlay');
+  for (var i = 0; i < overlays.length; i++) {
+    (function (ovlink) {
+      var overlay = ovlink.parentNode.querySelector('div.ui-overlay');
+      var ui_overlay_show = function (ev) {
+        overlay.style.display = 'block';
+        overlay.classList.add('ui-overlay-show');
+        var screen = document.querySelector('div.ui-overlay-screen');
+        if (screen == null) {
+          screen = document.createElement('div');
+          screen.className = 'ui-overlay-screen';
+          document.body.appendChild(screen);
         }
-      });
-      overlay.click(function (event) {
-        var target = event.target;
-        do {
-          if (target == inner[0]) {
-            break;
+        var inner = overlay.querySelector('div.inner');
+        var close = inner.querySelector('a.ui-overlay-close');
+        var media = inner.querySelectorAll('audio, video');
+
+        var overlay_play_func = function () {
+          for (var j = 0; j < media.length; j++) {
+            media[j].play();
           }
-        } while (target = target.parentNode);
-        if (target != inner[0]) {
-          hideoverlay();
-          return false;
-        }
-      });
-      screen.fadeIn('slow');
-      overlay.slideDown('fast', function () {
-        if (media.length > 0)
-          media[0].play();
-      });
-      return false;
-    });
-  });
+        };
+        var overlay_play_timeout = window.setTimeout(overlay_play_func, 1000);
+
+        var ui_overlay_funcs = {};
+        ui_overlay_funcs['hide'] = function () {
+          overlay.style.display = 'none';
+          document.body.removeChild(screen);
+          document.removeEventListener('keydown', ui_overlay_funcs['keydown'], false);
+          for (var j = 0; j < media.length; j++) {
+            media[j].pause();
+          }
+          window.clearTimeout(overlay_play_timeout);
+        };
+        ui_overlay_funcs['hideclick'] = function (uiev) {
+          ui_overlay_funcs['hide']();
+          uiev.preventDefault();
+        };
+        ui_overlay_funcs['keydown'] = function (uiev) {
+          if (uiev.keyCode == 27) {
+            ui_overlay_funcs['hide']();
+          }
+        };
+        screen.addEventListener('click', ui_overlay_funcs['hideclick'], false);
+        close.addEventListener('click', ui_overlay_funcs['hideclick'], false);
+        document.addEventListener('keydown', ui_overlay_funcs['keydown'], false);
+        ev.preventDefault();
+      };
+      ovlink.addEventListener('click', ui_overlay_show, false);
+    })(overlays[i]);
+  }
 });
 ]]></xsl:text>
 </xsl:template>
diff --git a/xslt/mallard/html/mal2html-ui.xsl b/xslt/mallard/html/mal2html-ui.xsl
index 2260377..f82ae15 100644
--- a/xslt/mallard/html/mal2html-ui.xsl
+++ b/xslt/mallard/html/mal2html-ui.xsl
@@ -474,38 +474,38 @@ ${node} element.
   <!-- only process first, and handle consecutive overlays so we
        can put them in a wrapper div for flexbox -->
   <xsl:if test="not(preceding-sibling::*[1][self::uix:overlay])">
-    <xsl:variable name="media" select="mal:media[1]"/>
-    <xsl:variable name="width">
-      <xsl:choose>
-        <xsl:when test="@width">
-          <xsl:value-of select="@width"/>
-        </xsl:when>
-        <xsl:otherwise>
-          <xsl:text>280</xsl:text>
-        </xsl:otherwise>
-      </xsl:choose>
-    </xsl:variable>
-    <xsl:variable name="height">
-      <xsl:choose>
-        <xsl:when test="@height">
-          <xsl:value-of select="@height"/>
-        </xsl:when>
-        <xsl:otherwise>
-          <xsl:text>280</xsl:text>
-        </xsl:otherwise>
-      </xsl:choose>
-    </xsl:variable>
     <div class="links-tiles">
       <xsl:variable name="count" select="count(following-sibling::*[not(self::uix:overlay)])"/>
       <xsl:for-each select="self::* |
                             following-sibling::uix:overlay
                             [count(following-sibling::*[not(self::uix:overlay)]) = $count]">
+        <xsl:variable name="media" select="mal:media[1]"/>
+        <xsl:variable name="width">
+          <xsl:choose>
+            <xsl:when test="@width">
+              <xsl:value-of select="@width"/>
+            </xsl:when>
+            <xsl:otherwise>
+              <xsl:text>280</xsl:text>
+            </xsl:otherwise>
+          </xsl:choose>
+        </xsl:variable>
+        <xsl:variable name="height">
+          <xsl:choose>
+            <xsl:when test="@height">
+              <xsl:value-of select="@height"/>
+            </xsl:when>
+            <xsl:otherwise>
+              <xsl:text>280</xsl:text>
+            </xsl:otherwise>
+          </xsl:choose>
+        </xsl:variable>
         <div class="links-tile">
           <a href="{$media/@src}" class="ui-overlay">
             <span class="links-tile-img">
               <xsl:choose>
                 <xsl:when test="$media/uix:thumb">
-                  <img src="{$media/uix:thumb[1]/@src}"/>
+                  <img src="{$media/uix:thumb[1]/@src}" width="{$width}"/>
                 </xsl:when>
                 <!-- FIXME: audio/video with image child -->
                 <!--
@@ -514,10 +514,10 @@ ${node} element.
                     </xsl:when>
                 -->
                 <xsl:when test="$media/@type = 'video'">
-                  <video src="{$media/@src}"/>
+                  <video src="{$media/@src}" width="{$width}"/>
                 </xsl:when>
                 <xsl:otherwise>
-                  <img src="{$media/@src}"/>
+                  <img src="{$media/@src}" width="{$width}"/>
                 </xsl:otherwise>
               </xsl:choose>
             </span>