From 5506f87f17605679edd0281c1a2b674f283dac74 Mon Sep 17 00:00:00 2001
From: Jacques Distler <distler@golem.ph.utexas.edu>
Date: Thu, 28 Jan 2010 23:37:10 -0600
Subject: [PATCH] One-Click S5 Template

Make it yet-easier to create
S5 slideshows.
---
 app/models/wiki_reference.rb      | 12 +++++++++++-
 app/views/wiki/edit.rhtml         |  4 ++++
 app/views/wiki/new.rhtml          |  3 +++
 public/javascripts/page_helper.js | 18 ++++++++++++++++++
 4 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/app/models/wiki_reference.rb b/app/models/wiki_reference.rb
index 82ef95dc..6277195b 100644
--- a/app/models/wiki_reference.rb
+++ b/app/models/wiki_reference.rb
@@ -80,7 +80,17 @@ class WikiReference < ActiveRecord::Base
     row = connection.select_one(sanitize_sql([query, page_name]))
     row['name'].as_utf8 if row
   end
-  
+
+  def self.page_categories(web, page_name)
+    query =
+      "SELECT referenced_name FROM wiki_references JOIN pages " +
+      "ON wiki_references.page_id = pages.id " +
+      "WHERE pages.name = ? " +
+      "AND wiki_references.link_type = '#{CATEGORY}' " +
+      "AND pages.web_id = '#{web.id}'"
+    names = connection.select_all(sanitize_sql([query, page_name])).map { |row| row['referenced_name'].as_utf8 }
+  end
+
   def self.pages_in_category(web, category)
     query = 
       "SELECT name FROM pages JOIN wiki_references " +
diff --git a/app/views/wiki/edit.rhtml b/app/views/wiki/edit.rhtml
index a09bb005..b9239251 100644
--- a/app/views/wiki/edit.rhtml
+++ b/app/views/wiki/edit.rhtml
@@ -69,5 +69,9 @@ function cleanAuthorName() {
 }
 
 document.forms["editForm"].elements["content"].focus();
+<%- if [:markdownMML, :markdownPNG, :markdown].include?(@web.markup) and 
+    !WikiReference.page_categories(@web, @page.name).include?('S5-slideshow') -%>
+addS5button('<%= CGI.escapeHTML(@page.name) %>');
+<%- end -%>
 //--><!]]>
 </script>
diff --git a/app/views/wiki/new.rhtml b/app/views/wiki/new.rhtml
index 339fdd34..b0c7ab70 100644
--- a/app/views/wiki/new.rhtml
+++ b/app/views/wiki/new.rhtml
@@ -31,4 +31,7 @@ function cleanAuthorName() {
   }
 }
 document.forms["editForm"].elements["content"].focus();
+<%- if [:markdownMML, :markdownPNG, :markdown].include?(@web.markup) -%>
+addS5button('<%= CGI.escapeHTML(@page_name) %>');
+<%- end -%>
 </script>
diff --git a/public/javascripts/page_helper.js b/public/javascripts/page_helper.js
index c476e6a5..297ba78f 100644
--- a/public/javascripts/page_helper.js
+++ b/public/javascripts/page_helper.js
@@ -53,6 +53,24 @@ function mactionWorkarounds() {
      });
 }
 
+function addS5button(page_name) {
+  var f = $('MarkupHelp');
+  if (f) {
+    var s5button = new Element('input', {id:'S5button', type:'button', value: 'Make this page an S5 slideshow'});
+    f.insert({top: s5button});
+    Event.observe(s5button, 'click', function(){
+      var preamble = "author: " + document.getElementById('author').value +
+        "\ncompany: \ntitle: " + page_name +
+        "\nsubtitle: \nslide_theme: default\nslide_footer: \nslide_subfooter: " +
+        "\n\n:category: S5-slideshow\n\n" + page_name +
+        "\n==============\n\nMy First Slide\n-----------------\n\n";
+      var content = document.getElementById('content');
+      content.value = preamble + content.value;
+      document.getElementById('S5button').hide();
+    });
+  }
+}
+
 function updateSize(elt, w, h) {
    // adjust to the size of the user's browser area.
    // w and h are the original, unadjusted, width and height per row/column