1 files changed, 72 insertions, 0 deletions
diff --git a/modules/libDLImage.js b/modules/libDLImage.js
new file mode 100644
index 0000000..63fdcb9
--- /dev/null
+++ b/modules/libDLImage.js
@@ -0,0 +1,72 @@
+//
+// libDLImage.js
+//
+//   libDLImage.js is code for download image data.
+//   libDLImage.js is ran on ChromeWorker thread.
+//
+//
+//   accept message:
+//     {
+//       'imageUrl'  :string,
+//       'savePath'  :string,
+//       'refererUrl':string,
+//       'cookie'    :string
+//     }
+//
+//     imageUrl   : remote image URL
+//     savePath   : full path on local strage
+//     refererUrl : referer string (optional)
+//     cookie     : cookie string (optional)
+//
+//
+//   send message:
+//     {
+//       'status'  :string,
+//       'message' :JSObject,
+//       'savePath':string
+//     }
+//
+//     status   : 'normarl' or 'error'
+//     message  : error message (string) or image data (binary)
+//     savePath : full path on local strage
+//                ( only success and same savePath on the accept message )
+//
+var JSONMessage;
+var xhrImg;
+
+function trueImage(){
+  var instream=xhrImg.responseText;
+  self.postMessage(
+    {'status':'normal','message':instream,'savePath':JSONMessage.savePath}
+  );
+  return;
+};
+
+function falseImage(){
+  self.postMessage({'status':'error','message':'IMAGE FILE ACCEPT ERROR!!'});
+  return false;
+};
+
+function downloadImage(){
+  xhrImg=new XMLHttpRequest();
+  xhrImg.addEventListener("load",trueImage,false);
+  xhrImg.addEventListener("error",falseImage,false);
+  xhrImg.open("GET",JSONMessage.imageUrl,false);
+  xhrImg.overrideMimeType('text/plain;charset=x-user-defined');
+  if(0<JSONMessage.refererUrl.length){
+    xhrImg.setRequestHeader('Referer',JSONMessage.refererUrl);
+  };
+  if(0<JSONMessage.cookie){
+    xhrImg.setRequestHeader('Cookie',JSONMessage.cookie);
+  };
+  xhrImg.send(null);
+};
+
+addEventListener("message",function(event){
+  JSONMessage=JSON.parse(event.data);
+  if(JSONMessage.imageUrl===undefined||JSONMessage.savePath===undefined){
+    self.postMessage({'status':'error','message':'PARAMETA ERROR!!'});
+    return false;
+  }
+  downloadImage();
+}, false);