From 2d956b4c3719699365630f16efec84e22c9a0cd0 Mon Sep 17 00:00:00 2001
From: Michael Meeks <michael.meeks@collabora.com>
Date: Wed, 29 May 2019 13:11:01 +0100
Subject: Add pasteresult: message to allow re-try with a different format.

Change-Id: Ia3d7aacdcf2b819437eb2da68a79dd99ed7dca42
---
 kit/ChildSession.cpp                  | 16 ++++++++++++--
 loleaflet/src/layer/tile/TileLayer.js | 41 ++++++++++++++++++++++++++++++-----
 2 files changed, 50 insertions(+), 7 deletions(-)

diff --git a/kit/ChildSession.cpp b/kit/ChildSession.cpp
index 91a3ad296b..f4387d60d1 100644
--- a/kit/ChildSession.cpp
+++ b/kit/ChildSession.cpp
@@ -997,15 +997,19 @@ bool ChildSession::paste(const char* buffer, int length, const std::vector<std::
         return false;
     }
 
-    if (mimeType.find("") == 0)
+    bool fallback = false;
+    if (mimeType.find("application/x-openoffice-embed-source-xml") == 0)
     {
         LOG_TRC("Re-writing garbled mime-type " << mimeType);
         mimeType = "application/x-openoffice-embed-source-xml;windows_formatname=\"Star Embed Source (XML)\"";
+        fallback = true;
     }
 
     const std::string firstLine = getFirstLine(buffer, length);
     const char* data = buffer + firstLine.size() + 1;
     const int size = length - firstLine.size() - 1;
+    bool success = false;
+    std::string result = "pasteresult: ";
     if (size > 0)
     {
         std::unique_lock<std::mutex> lock(_docManager.getDocumentMutex());
@@ -1013,9 +1017,17 @@ bool ChildSession::paste(const char* buffer, int length, const std::vector<std::
         getLOKitDocument()->setView(_viewId);
 
         LOG_TRC("Paste data of size " << size << " bytes and hash " << SpookyHash::Hash64(data, size, 0));
-        if (!getLOKitDocument()->paste(mimeType.c_str(), data, size))
+        success = getLOKitDocument()->paste(mimeType.c_str(), data, size);
+        if (!success)
             LOG_WRN("Paste failed " << getLOKitLastError());
     }
+    if (success)
+        result += "success";
+    else if (fallback)
+        result += "fallback";
+    else
+        result += "fail";
+    sendTextFrame(result);
 
     return true;
 }
diff --git a/loleaflet/src/layer/tile/TileLayer.js b/loleaflet/src/layer/tile/TileLayer.js
index b9a23067ab..71705148aa 100644
--- a/loleaflet/src/layer/tile/TileLayer.js
+++ b/loleaflet/src/layer/tile/TileLayer.js
@@ -493,6 +493,9 @@ L.TileLayer = L.GridLayer.extend({
 		else if (textMsg.startsWith('editor:')) {
 			this._updateEditor(textMsg);
 		}
+		else if (textMsg.startsWith('pasteresult:')) {
+			this._pasteResult(textMsg);
+		}
 		else if (textMsg.startsWith('validitylistbutton:')) {
 			this._onValidityListButtonMsg(textMsg);
 		}
@@ -2493,6 +2496,23 @@ L.TileLayer = L.GridLayer.extend({
 		return '';
 	},
 
+	// Sometimes our smart-paste fails & we need to try again.
+	_pasteResult : function(textMsg)
+	{
+		textMsg = textMsg.substring('pasteresult:'.length + 1);
+		console.log('Paste state: ' + textMsg);
+		if (textMsg == 'fallback') {
+			if (this._pasteFallback != null) {
+				console.log('Paste failed- falling back to HTML');
+				this._map._socket.sendMessage(this._pasteFallback);
+			} else {
+				console.log('No paste fallback present.');
+			}
+		}
+
+		this._pasteFallback = null;
+	},
+
 	_dataTransferToDocument: function (dataTransfer, preferInternal) {
 
 		// Look for our HTML meta magic.
@@ -2511,6 +2531,9 @@ L.TileLayer = L.GridLayer.extend({
 			return;
 		}
 
+		console.log('Resetting paste fallback');
+		this._pasteFallback = null;
+
 		// Suck HTML content out of dataTransfer now while it feels like working.
 		var content = this._readContentSync(dataTransfer);
 
@@ -2541,10 +2564,12 @@ L.TileLayer = L.GridLayer.extend({
 			return;
 		}
 
-		// Try Fetch the data directly ourselves instead.
-		if (meta != '') {
+		if (meta != '') { // in Smart server side paste mode ...
 			// FIXME: really should short-circuit on the server.
 			console.log('Doing async paste of data from remote origin\n\t"' + meta + '" is not\n\t"' + id + '"');
+
+			this._pasteFallback = content;
+
 			var tilelayer = this;
 			var oReq = new XMLHttpRequest();
 			oReq.onload = function(e) {
@@ -2556,18 +2581,24 @@ L.TileLayer = L.GridLayer.extend({
 				} else {
 					console.log('Error code ' + oReq.status + ' fetching from URL "' + meta + '": ' + e + ' falling back to local.');
 					tilelayer._map._socket.sendMessage(content);
+					this._pasteFallback = null;
 				}
 			}
 			oReq.onerror = function(e) {
 				console.log('Error fetching from URL "' + meta + '": ' + e + ' falling back to local.');
 				tilelayer._map._socket.sendMessage(content);
+				this._pasteFallback = null;
 			};
 			oReq.open('GET', meta);
 			oReq.responseType = 'arraybuffer';
 			oReq.send();
 			// user abort - if they do stops paste.
+		} else if (content != null) {
+			console.log('Normal HTML, so smart paste not possible');
+			tilelayer._map._socket.sendMessage(content);
+			this._pasteFallback = null;
 		} else {
-			console.log('Received a paste but nothing on the clipboard');
+			console.log('Nothing we can paste on the clipboard');
 		}
 	},
 
@@ -2575,9 +2606,9 @@ L.TileLayer = L.GridLayer.extend({
 		// Try various content mime types
 		var mimeTypes;
 		if (this._docType === 'spreadsheet') {
-			// FIXME apparently we cannot paste the text/html or text/rtf as
-			// produced by LibreOffice in Calc from some reason
 			mimeTypes = [
+				['text/rtf', 'text/rtf'],
+				['text/html', 'text/html'],
 				['text/plain', 'text/plain;charset=utf-8'],
 				['Text', 'text/plain;charset=utf-8']
 			];
-- 
cgit