Major fixes for Song page

[songbook.git] / web / songbook.js

diff --git a/web/songbook.js b/web/songbook.js
new file mode 100644 (file)
index 0000000..85a4b18
--- /dev/null
+++ b/web/songbook.js
@@ -0,0 +1,72 @@
+// Javascript functions for controling audio
+starttime = null;
+endtime   = null;
+
+spacebar       = 32;
+return2start   = 82;
+backfewsecs    = 66;
+forwardfewsecs = 70;
+seta           = 65;
+cleara         = 67;
+howmanysecs    = 10;
+
+window.onload = function() {
+  song = document.getElementById('song');
+
+  starttime = song.currentTime;
+  endtime   = song.duration;
+  body      = document.getElementsByTagName('body')[0]
+
+  body.onkeydown = 
+    function(e) {
+      var ev = e || event;
+      if (ev.keyCode == spacebar) {
+        if (song.paused) {
+          playing = false;
+        } else {
+          playing = true;
+        } // if
+
+        if (playing) {
+          song.pause();
+          playing = false;
+        } else {
+          if (starttime != 0) {
+            song.currentTime = starttime
+          } // if
+
+          song.play();
+          playing = true;
+        } // if
+
+        e.preventDefault();
+        return;
+      } else if (ev.keyCode == return2start) {
+        if (starttime != null) {
+          song.currentTime = starttime;
+        } else {
+          song.currentTime = 0;
+        } // if
+
+        return;
+      } else if (ev.keyCode == backfewsecs) {
+        song.currentTime -= howmanysecs;
+        song.play()
+
+        return;
+      } else if (ev.keyCode == forwardfewsecs) {
+        song.currentTime += howmanysecs;
+        song.play();
+
+        return;
+      } else if (ev.keyCode == seta) {
+        starttime = song.currentTime;
+
+        return;
+      } else if (ev.keyCode == cleara) {
+        starttime = 0;
+
+        return;
+      } // if
+    } // function
+  }  // getElementByTagName
\ No newline at end of file