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1 files changed, 94 insertions, 0 deletions

diff --git a/hooks/after_prepare/010_add_platform_class.js b/hooks/after_prepare/010_add_platform_class.js
new file mode 100755
index 00000000..bda3e415
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+++ b/hooks/after_prepare/010_add_platform_class.js
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+#!/usr/bin/env node
+
+// Add Platform Class
+// v1.0
+// Automatically adds the platform class to the body tag
+// after the `prepare` command. By placing the platform CSS classes
+// directly in the HTML built for the platform, it speeds up
+// rendering the correct layout/style for the specific platform
+// instead of waiting for the JS to figure out the correct classes.
+
+var fs = require('fs');
+var path = require('path');
+
+var rootdir = process.argv[2];
+
+function addPlatformBodyTag(indexPath, platform) {
+  // add the platform class to the body tag
+  try {
+    var platformClass = 'platform-' + platform;
+    var cordovaClass = 'platform-cordova platform-webview';
+
+    var html = fs.readFileSync(indexPath, 'utf8');
+
+    var bodyTag = findBodyTag(html);
+    if(!bodyTag) return; // no opening body tag, something's wrong
+
+    if(bodyTag.indexOf(platformClass) > -1) return; // already added
+
+    var newBodyTag = bodyTag;
+
+    var classAttr = findClassAttr(bodyTag);
+    if(classAttr) {
+      // body tag has existing class attribute, add the classname
+      var endingQuote = classAttr.substring(classAttr.length-1);
+      var newClassAttr = classAttr.substring(0, classAttr.length-1);
+      newClassAttr += ' ' + platformClass + ' ' + cordovaClass + endingQuote;
+      newBodyTag = bodyTag.replace(classAttr, newClassAttr);
+
+    } else {
+      // add class attribute to the body tag
+      newBodyTag = bodyTag.replace('>', ' class="' + platformClass + ' ' + cordovaClass + '">');
+    }
+
+    html = html.replace(bodyTag, newBodyTag);
+
+    fs.writeFileSync(indexPath, html, 'utf8');
+
+    process.stdout.write('add to body class: ' + platformClass + '\n');
+  } catch(e) {
+    process.stdout.write(e);
+  }
+}
+
+function findBodyTag(html) {
+  // get the body tag
+  try{
+    return html.match(/<body(?=[\s>])(.*?)>/gi)[0];
+  }catch(e){}
+}
+
+function findClassAttr(bodyTag) {
+  // get the body tag's class attribute
+  try{
+    return bodyTag.match(/ class=["|'](.*?)["|']/gi)[0];
+  }catch(e){}
+}
+
+if (rootdir) {
+
+  // go through each of the platform directories that have been prepared
+  var platforms = (process.env.CORDOVA_PLATFORMS ? process.env.CORDOVA_PLATFORMS.split(',') : []);
+
+  for(var x=0; x<platforms.length; x++) {
+    // open up the index.html file at the www root
+    try {
+      var platform = platforms[x].trim().toLowerCase();
+      var indexPath;
+
+      if(platform == 'android') {
+        indexPath = path.join('platforms', platform, 'assets', 'www', 'index.html');
+      } else {
+        indexPath = path.join('platforms', platform, 'www', 'index.html');
+      }
+
+      if(fs.existsSync(indexPath)) {
+        addPlatformBodyTag(indexPath, platform);
+      }
+
+    } catch(e) {
+      process.stdout.write(e);
+    }
+  }
+
+}