145 lines
7 KiB
HTML
145 lines
7 KiB
HTML
<!DOCTYPE html>
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<!-- Proof of concept of running loleaflet.html in an iframe.
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The top part of this page has a form with three input fields:
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"x", "y", and "color", a submit button, and a "result" field used
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for output only.
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When the submit button is pressed, the input fields are passed as
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a postMessage to the iframe. The message also specifies what
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Python script to call. (In this demo case, the 'SetCellColor'
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script in scripting/examples/python/SetCellColor.py in
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LibreOffice core.) The parameters are then in our JavaScript
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passed on to the Python script that acts on the document open in
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the iframe. The Python script returns a value, which gets passed
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to loleaflet in a unocommandresult: message, and passed on to the
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event listener on this page, which writes it to the output field.
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For this to work, in the trivial proof of concept case of 'make
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run', the below patch is needed to the C++ code. It is probably
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not necessary in a "real" WOPI-based setup where iframes are
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already used and things work fine.
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--- a/wsd/FileServer.cpp
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+++ b/wsd/FileServer.cpp
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@@ -172,7 +172,7 @@ void FileServerRequestHandler::handleRequest(const HTTPRequest& request, Poco::M
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const auto& config = Application::instance().config();
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const std::string loleafletHtml = config.getString("loleaflet_html", "loleaflet.html");
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const std::string endPoint = requestSegments[requestSegments.size() - 1];
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- if (endPoint == loleafletHtml)
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+ if (endPoint == loleafletHtml || endPoint == "framed.html")
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{
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preprocessFile(request, message, socket);
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return;
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@@ -548,7 +548,7 @@ void FileServerRequestHandler::preprocessFile(const HTTPRequest& request, Poco::
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LOG_TRC("Denied frame ancestor: " << frameAncestor);
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cspOss << "img-src 'self' data: ;";
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- oss << "X-Frame-Options: deny\r\n";
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+ oss << "X-Frame-Options: sameorigin\r\n";
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}
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cspOss << "\r\n";
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-->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>Online Editor</title>
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<script>
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function callSetCellColor() {
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window.frames[0].postMessage(JSON.stringify({'MessageId': 'Host_PostmessageReady'}), '*');
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var x = document.forms[0].elements['x'].value;
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var y = document.forms[0].elements['y'].value;
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var color = document.forms[0].elements['color'].value;
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console.log('x=' + x + ' y=' + y + ' color=' + color);
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color = parseInt('0x' + color.substring(1));
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console.log('x=' + x + ' y=' + y + ' color=' + color);
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window.frames[0].postMessage(JSON.stringify({'MessageId': 'CallPythonScript',
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'SendTime': Date.now(),
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'ScriptFile': 'SetCellColor.py',
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'Function': 'SetCellColor',
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'Values': {'x': {'type': 'long', 'value': x},
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'y': {'type': 'long', 'value': y},
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'color': {'type': 'long', 'value': color}
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}
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}),
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'*');
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}
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function callGetNamedRanges() {
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window.frames[0].postMessage(JSON.stringify({'MessageId': 'Host_PostmessageReady'}), '*');
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window.frames[0].postMessage(JSON.stringify({'MessageId': 'CallPythonScript',
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'SendTime': Date.now(),
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'ScriptFile': 'NamedRanges.py',
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'Function': 'GetNamedRanges',
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'Values': null
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}),
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'*');
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}
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function receiveMessage(event) {
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var msg = JSON.parse(event.data);
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console.log('==== framed.html receiveMessage: ' + event.data);
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console.log(' ' + msg);
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if (msg.hasOwnProperty('MessageId') &&
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msg.MessageId === 'CallPythonScript-Result' &&
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msg.hasOwnProperty('Values') &&
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msg.Values.hasOwnProperty('commandName') &&
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msg.Values.hasOwnProperty('success') &&
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msg.Values.success == 'true' &&
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msg.Values.hasOwnProperty('result') &&
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msg.Values.result.hasOwnProperty('value')) {
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if (msg.Values.commandName === 'vnd.sun.star.script:SetCellColor.py$SetCellColor?language=Python&location=share') {
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document.forms['cell-colour-form'].elements['result'].readOnly = false;
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document.forms['cell-colour-form'].elements['result'].value = msg.Values.result.value;
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document.forms['cell-colour-form'].elements['result'].readOnly = true;
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}
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else if (msg.Values.commandName === 'vnd.sun.star.script:NamedRanges.py$GetNamedRanges?language=Python&location=share') {
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document.forms['get-named-ranges-form'].elements['result'].readOnly = false;
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var index = 0;
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var result = '';
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while (msg.Values.result.value.hasOwnProperty(index.toString())) {
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result += msg.Values.result.value[index.toString()].value + "\n";
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index++;
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}
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document.forms['get-named-ranges-form'].elements['result'].value = result;
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document.forms['get-named-ranges-form'].elements['result'].readOnly = true;
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}
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}
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}
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window.addEventListener("message", receiveMessage, false);
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</script>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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</head>
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<body style="user-select: none;">
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<p>
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<form id="cell-colour-form">
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Cell: (<input type="number" name="x" min="0" max="20" value="0">, <input type="number" name="y" min="0" max="20" value="0">),
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colour: <input type="text" name="color" value="#008000">
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<br>
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Click <button onclick="callSetCellColor(); return false;">here</button>
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to send message to iframe below. It returned <input type="text" name="result" value="" readonly>.
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</form>
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</p>
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<form id="get-named-ranges-form">
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Click <button onclick="callGetNamedRanges(); return false;">here</button> to get a list of named ranges in the document:
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<textarea name="result" value="" rows="10" "cols="80"></textarea>
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</form>
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<!-- The hostname and pathnames below are obviously specific to my
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personal environment and need to be changed appropriately. Also
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the hex string needs to be changed of course, to the right one as
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shown by 'make run'. -->
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<iframe src="http://snorken.local:9980/loleaflet/94781ec6/loleaflet.html?file_path=file:///home/tml/lo/internal-online/test/data/empty.ods&NotWOPIButIframe=true" height="1000" width="1000"></iframe>
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</body>
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</html>
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