Make headline images explicit, add asset credits

- related_assets gains a `headline` boolean (DB-enforced: at most one
  per page), replacing "first image by position" as the headline
  rule. A rake task backfills the current first image on every live
  head/draft, so nothing changes visually until an editor changes it.
- The image picker sidebar gets a star toggle reflecting the flag;
  the TinyMCE inline-image picker's badge now reads it too, instead
  of assuming position 0.
- No headline chosen (or none attached) now falls back to the
  gallery-count caption itself becoming the lightbox trigger, instead
  of the gallery being unreachable.
- Assets gain creator, source_url, and license_key (against a new
  config/asset_licenses.yml dictionary). asset_credit renders a
  degrading attribution line, reused as a hidden per-image glightbox
  caption so credit is one click away for every image, not only the
  headline's always-visible one.
- Fixed: asset thumbnails rendered unconditionally regardless of
  whether a real variant exists on disk. Asset#has_variant? checks
  file existence, not content type -- some legacy PDFs have real
  pre-rewrite thumbnails a content-type check would have hidden.
- assets#new/edit rebuilt onto the same node_description/node_content
  layout as assets#show, picking up the three new fields in the
  process.

1 files changed, 8 insertions, 4 deletions

diff --git a/public/javascripts/admin_interface.js b/public/javascripts/admin_interface.js
index e9f96c2..7fb1dc2 100644
--- a/public/javascripts/admin_interface.js
+++ b/public/javascripts/admin_interface.js
@@ -277,10 +277,12 @@ cccms = {
 
       var items = $('#related_asset_list li').map(function() {
         return {
+          id: $(this).data('asset-id'),
           thumb: $(this).find('img').attr('src'),
           large: $(this).data('large-url'),
           original: $(this).data('original-url'),
-          name: $(this).data('name')
+          name: $(this).data('name'),
+          headline: $(this).data('headline') === true
         };
       }).get();
       cccms.inline_images.items = items;
@@ -293,7 +295,7 @@ cccms = {
         items.forEach(function(item, i) {
           var wrapper = $('<div class="inline_image_picker_item"></div>');
           wrapper.append($('<img>').attr('src', item.thumb).attr('data-index', i));
-          if (i === 0) {
+          if (item.headline) {
             wrapper.append($('<span>', { "class": "inline_image_picker_headline_badge" }).text("Headline"));
           }
           grid.append(wrapper);
@@ -317,8 +319,10 @@ cccms = {
         ? 'inline-image inline-image--full'
         : 'inline-image inline-image--half inline-image--' + placement;
 
-      var html = '<a href="' + item.original + '" class="glightbox" data-gallery="page-' + cccms.inline_images.node_id + '">' +
-                  '<img src="' + item.large + '" class="' + classes + '" alt="' + cccms.inline_images.escape_attr(item.name) + '"></a>';
+      var esc = cccms.inline_images.escape_attr;
+      var html = '<a href="' + esc(item.original) + '" class="glightbox" data-gallery="page-' + esc(cccms.inline_images.node_id) + '"' +
+                 ' data-title="' + esc(item.name) + '" data-description="#credit_for_asset_' + esc(item.id) + '">' +
+                 '<img src="' + esc(item.large) + '" class="' + classes + '" alt="' + esc(item.name) + '"></a>';
 
       cccms.inline_images.editor.insertContent(html);
       $('#inline_image_picker').hide();