From ae6d2de17f740915e47c64d210680eb5e9850335 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Wed, 06 Jun 2012 11:35:21 -0400
Subject: [PATCH] New feature to add mail attachments using drag & drop on HTML5 enabled browsers
---
program/js/app.js | 137 +++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 131 insertions(+), 6 deletions(-)
diff --git a/program/js/app.js b/program/js/app.js
index 9d6f7e8..b3d3aed 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -458,6 +458,14 @@
if (this.gui_objects.folderlist)
this.gui_containers.foldertray = $(this.gui_objects.folderlist);
+ // activate html5 file drop feature (if browser supports it and if configured)
+ if (this.gui_objects.filedrop && this.env.filedrop && ((XMLHttpRequest && XMLHttpRequest.prototype.sendAsBinary) || window.FormData)) {
+ $(document.body).bind('dragover dragleave drop', function(e){ return ref.document_drag_hover(e, e.type == 'dragover'); });
+ $(this.gui_objects.filedrop).addClass('droptarget')
+ .bind('dragover dragleave', function(e){ return ref.file_drag_hover(e, e.type == 'dragover'); })
+ .get(0).addEventListener('drop', function(e){ return ref.file_dropped(e); }, false);
+ }
+
// trigger init event hook
this.triggerEvent('init', { task:this.task, action:this.env.action });
@@ -3453,12 +3461,7 @@
var content = '<span>' + this.get_label('uploading' + (files > 1 ? 'many' : '')) + '</span>',
ts = frame_name.replace(/^rcmupload/, '');
- if (this.env.loadingicon)
- content = '<img src="'+this.env.loadingicon+'" alt="" class="uploading" />'+content;
- content = '<a title="'+this.get_label('cancel')+'" onclick="return rcmail.cancel_attachment_upload(\''+ts+'\', \''+frame_name+'\');" href="#cancelupload" class="cancelupload">'
- + (this.env.cancelicon ? '<img src="'+this.env.cancelicon+'" alt="" />' : this.get_label('cancel')) + '</a>' + content;
-
- this.add2attachment_list(ts, { name:'', html:content, classname:'uploading', complete:false });
+ this.add2attachment_list(ts, { name:'', html:content, classname:'uploading', frame:frame_name, complete:false });
// upload progress support
if (this.env.upload_progress_time) {
@@ -3477,6 +3480,13 @@
{
if (!this.gui_objects.attachmentlist)
return false;
+
+ if (!att.complete && ref.env.loadingicon)
+ att.html = '<img src="'+ref.env.loadingicon+'" alt="" class="uploading" />' + att.html;
+
+ if (!att.complete && att.frame)
+ att.html = '<a title="'+this.get_label('cancel')+'" onclick="return rcmail.cancel_attachment_upload(\''+name+'\', \''+att.frame+'\');" href="#cancelupload" class="cancelupload">'
+ + (this.env.cancelicon ? '<img src="'+this.env.cancelicon+'" alt="" />' : this.get_label('cancel')) + '</a>' + att.html;
var indicator, li = $('<li>').attr('id', name).addClass(att.classname).html(att.html);
@@ -6220,6 +6230,121 @@
return frame_name;
};
+ // html5 file-drop API
+ this.document_drag_hover = function(e, over)
+ {
+ e.preventDefault();
+ $(ref.gui_objects.filedrop)[(over?'addClass':'removeClass')]('active');
+ };
+
+ this.file_drag_hover = function(e, over)
+ {
+ e.preventDefault();
+ e.stopPropagation();
+ $(ref.gui_objects.filedrop)[(over?'addClass':'removeClass')]('hover');
+ };
+
+ // handler when files are dropped to a designated area.
+ // compose a multipart form data and submit it to the server
+ this.file_dropped = function(e)
+ {
+ // abort event and reset UI
+ this.file_drag_hover(e, false);
+
+ // prepare multipart form data composition
+ var files = e.target.files || e.dataTransfer.files,
+ formdata = window.FormData ? new FormData() : null,
+ fieldname = this.env.filedrop.fieldname || '_file',
+ boundary = '------multipartformboundary' + (new Date).getTime(),
+ dashdash = '--', crlf = '\r\n',
+ multipart = dashdash + boundary + crlf;
+
+ if (!file || !files.length)
+ return;
+
+ // inline function to submit the files to the server
+ var submit_data = function() {
+ var multiple = files.length > 1,
+ ts = new Date().getTime(),
+ content = '<span>' + (multiple ? ref.get_label('uploadingmany') : files[0].name) + '</span>';
+
+ // add to attachments list
+ ref.add2attachment_list(ts, { name:'', html:content, classname:'uploading', complete:false });
+
+ // complete multipart content and post request
+ multipart += dashdash + boundary + dashdash + crlf;
+
+ $.ajax({
+ type: 'POST',
+ dataType: 'json',
+ url: ref.url(ref.env.filedrop.action||'upload', { _id:ref.env.compose_id||'', _uploadid:ts, _remote:1 }),
+ contentType: formdata ? false : 'multipart/form-data; boundary=' + boundary,
+ processData: false,
+ data: formdata || multipart,
+ beforeSend: function(xhr, s) { if (!formdata && xhr.sendAsBinary) xhr.send = xhr.sendAsBinary; },
+ success: function(data){ ref.http_response(data); },
+ error: function(o, status, err) { ref.http_error(o, status, err, null, 'attachment'); }
+ });
+ };
+
+ // get contents of all dropped files
+ var last = this.env.filedrop.single ? 0 : files.length - 1;
+ for (var i=0, f; i <= last && (f = files[i]); i++) {
+ if (!f.name) f.name = f.fileName;
+ if (!f.size) f.size = f.fileSize;
+ if (!f.type) f.type = 'application/octet-stream';
+
+ // binary encode file name
+ if (!formdata && /[^\x20-\x7E]/.test(f.name))
+ f.name_bin = unescape(encodeURIComponent(f.name));
+
+ if (this.env.filedrop.filter && !f.type.match(new RegExp(this.env.filedrop.filter))) {
+ // TODO: show message to user
+ continue;
+ }
+
+ // the easy way with FormData (FF4+, Chrome, Safari)
+ if (formdata) {
+ formdata.append(fieldname + '[]', f);
+ if (i == last)
+ return submit_data();
+ }
+ // use FileReader supporetd by Firefox 3.6
+ else if (window.FileReader) {
+ var reader = new FileReader();
+
+ // closure to pass file properties to async callback function
+ reader.onload = (function(file, i) {
+ return function(e) {
+ multipart += 'Content-Disposition: form-data; name="' + fieldname + '[]"';
+ multipart += '; filename="' + (f.name_bin || file.name) + '"' + crlf;
+ multipart += 'Content-Length: ' + file.size + crlf;
+ multipart += 'Content-Type: ' + file.type + crlf + crlf;
+ multipart += e.target.result + crlf;
+ multipart += dashdash + boundary + crlf;
+
+ if (i == last) // we're done, submit the data
+ return submit_data();
+ }
+ })(f,i);
+ reader.readAsBinaryString(f);
+ }
+ // Firefox 3
+ else if (f.getAsBinary) {
+ multipart += 'Content-Disposition: form-data; name="' + fieldname + '[]"';
+ multipart += '; filename="' + (f.name_bin || f.name) + '"' + crlf;
+ multipart += 'Content-Length: ' + f.size + crlf;
+ multipart += 'Content-Type: ' + f.type + crlf + crlf;
+ multipart += f.getAsBinary() + crlf;
+ multipart += dashdash + boundary +crlf;
+
+ if (i == last)
+ return submit_data();
+ }
+ }
+ };
+
+
// starts interval for keep-alive/check-recent signal
this.start_keepalive = function()
{
--
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