support upload by dragdrop from other browser windows,

hello from LO484 https://ocv.me/stuff/aircode.jpg

copyparty/web/browser.js

@@ -403,6 +403,7 @@ var Ls = {
 		"u_https3": "for better performance",
 		"u_ancient": 'your browser is impressively ancient -- maybe you should <a href="#" onclick="goto(\'bup\')">use bup instead</a>',
 		"u_nowork": "need firefox 53+ or chrome 57+ or iOS 11+",
+		"u_uri": "to dragdrop images from other browser windows,\nplease drop it onto the big upload button",
 		"u_enpot": 'switch to <a href="#">potato UI</a> (may improve upload speed)',
 		"u_depot": 'switch to <a href="#">fancy UI</a> (may reduce upload speed)',
 		"u_gotpot": 'switching to the potato UI for improved upload speed,\n\nfeel free to disagree and switch back!',
@@ -865,6 +866,7 @@ var Ls = {
 		"u_https3": "for høyere hastighet",
 		"u_ancient": 'nettleseren din er prehistorisk -- mulig du burde <a href="#" onclick="goto(\'bup\')">bruke bup istedenfor</a>',
 		"u_nowork": "krever firefox 53+, chrome 57+, eller iOS 11+",
+		"u_uri": "for å laste opp bilder ifra andre nettleservinduer,\nslipp bildet rett på den store last-opp-knappen",
 		"u_enpot": 'bytt til <a href="#">enkelt UI</a> (gir sannsynlig raskere opplastning)',
 		"u_depot": 'bytt til <a href="#">snæsent UI</a> (gir sannsynlig tregere opplastning)',
 		"u_gotpot": 'byttet til et enklere UI for å laste opp raskere,\n\ndu kan gjerne bytte tilbake altså!',

copyparty/web/up2k.js

@@ -998,13 +998,26 @@ function up2k_init(subtle) {
         return onover.bind(this)(e);
     }
     function onover(e) {
+        return onovercmn(this, e, false);
+    }
+    function onoverbtn(e) {
+        return onovercmn(this, e, true);
+    }
+    function onovercmn(self, e, btn) {
         try {
             var ok = false, dt = e.dataTransfer.types;
             for (var a = 0; a < dt.length; a++)
                 if (dt[a] == 'Files')
                     ok = true;
-                else if (dt[a] == 'text/uri-list')
+                else if (dt[a] == 'text/uri-list') {
-                    return true;
+                    if (btn) {
+                        ok = true;
+                        if (toast.txt == L.u_uri)
+                            toast.hide();
+                    }
+                    else
+                        return toast.inf(10, L.u_uri) || true;
+                }
 
             if (!ok)
                 return true;
@@ -1020,8 +1033,11 @@ function up2k_init(subtle) {
             document.body.ondragenter = document.body.ondragleave = document.body.ondragover = null;
             return modal.alert('your browser does not support drag-and-drop uploading');
         }
+        if (btn)
+            return;
+
         clmod(ebi('drops'), 'vis', 1);
-        var v = this.getAttribute('v');
+        var v = self.getAttribute('v');
         if (v)
             clmod(ebi(v), 'hl', 1);
     }
@@ -1045,6 +1061,8 @@ function up2k_init(subtle) {
     document.body.ondragleave = offdrag;
     document.body.ondragover = onover;
     document.body.ondrop = gotfile;
+    ebi('u2btn').ondrop = gotfile;
+    ebi('u2btn').ondragover = onoverbtn;
 
     var drops = [ebi('up_dz'), ebi('srch_dz')];
     for (var a = 0; a < 2; a++) {
@@ -1132,7 +1150,7 @@ function up2k_init(subtle) {
                 dst = good_files;
 
             if (is_itemlist) {
-                if (fobj.kind !== 'file')
+                if (fobj.kind !== 'file' && fobj.type !== 'text/uri-list')
                     continue;
 
                 try {
@@ -1144,6 +1162,8 @@ function up2k_init(subtle) {
                 }
                 catch (ex) { }
                 fobj = fobj.getAsFile();
+                if (!fobj)
+                    continue;
             }
             try {
                 if (fobj.size < 1)

copyparty/web/util.js

@@ -1274,6 +1274,9 @@ var toast = (function () {
     r.visible = false;
     r.txt = null;
     r.tag = obj;  // filler value (null is scary)
+    r.p_txt = '';
+    r.p_sec = 0;
+    r.p_t = 0;
 
     function scrollchk() {
         if (scrolling)
@@ -1306,10 +1309,23 @@ var toast = (function () {
     };
 
     r.show = function (cl, sec, txt, tag) {
+        var same = r.visible && txt == r.p_txt && r.p_sec == sec,
+            delta = Date.now() - r.p_t;
+
+        if (same && delta < 100)
+            return;
+
+        r.p_txt = txt;
+        r.p_sec = sec;
+        r.p_t = Date.now();
+
         clearTimeout(te);
         if (sec)
             te = setTimeout(r.hide, sec * 1000);
 
+        if (same && delta < 1000)
+            return;
+
         if (txt.indexOf('<body>') + 1)
             txt = txt.slice(0, txt.indexOf('<')) + ' [...]';