209 lines
11 KiB
HTML
209 lines
11 KiB
HTML
<!DOCTYPE html>
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<!-- Proof of concept of running loleaflet.html in an iframe. Also
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shows how to, from outside the iframe, invoke Python scripting in
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the underlying LibreOffice instance that manipulates the document
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being edited.
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The top part of this page has several forms. The first one with
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three input fields: "x", "y", and "color", a submit button, and a
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"result" field used 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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The other forms call other Python functions in other files. (In
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particular, in NamedRanges.py in the same directory.) The forms
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invoke Python functions that list, add, and delete named ranges
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in a Calc document being edited.
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To test this, do 'make run', and then in your browser open the
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equivalent of
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http://snorken.local:9980/loleaflet/3304e9093/framed.html if the
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browser is running on a different machine, or
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http://localhost:9980/loleaflet/3304e9093/framed.html if running
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on the same machine.
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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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// These functions named call* are invoked when submitting the
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// forms defined in the body of this web page. They show how to
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// post a message to the iframe where Online is running, that
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// will cause a Python script in the underlying LibreOffice
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// instance to be invoked.
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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 callAddNamedRange() {
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window.frames[0].postMessage(JSON.stringify({'MessageId': 'Host_PostmessageReady'}), '*');
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// Our form below takes input in A1 format, the Python script wants zero-based indexes and width and height
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var abc = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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var name = document.forms['add-named-range-form'].elements['name'].value;
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var x0 = document.forms['add-named-range-form'].elements['x0'].value;
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var x1 = document.forms['add-named-range-form'].elements['x1'].value;
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var y0 = parseInt(document.forms['add-named-range-form'].elements['y0'].value);
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var y1 = parseInt(document.forms['add-named-range-form'].elements['y1'].value);
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console.log('x0=' + x0 + ', x1=' + x1)
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x0 = abc.indexOf(x0);
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x1 = abc.indexOf(x1);
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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': 'DefineNamedRange',
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'Values': {'sheet': {'type': 'string', 'value': 'Sheet1'},
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'x0': {'type': 'long', 'value': x0},
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'y0': {'type': 'long', 'value': y0-1},
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'width': {'type': 'long', 'value': x1-x0+1},
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'height': {'type': 'long', 'value': y1-y0+1},
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'name': {'type': 'string', 'value': name}
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}
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}),
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'*');
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}
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function callDeleteNamedRange() {
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window.frames[0].postMessage(JSON.stringify({'MessageId': 'Host_PostmessageReady'}), '*');
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var name = document.forms['delete-named-range-form'].elements['name'].value;
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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': 'DeleteNamedRange',
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'Values': {'name': {'type': 'string', 'value': name}
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}
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}),
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'*');
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}
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// This function is invoked when the iframe posts a message back.
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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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// We are only interested in messages that are marked as being
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// a result from a Python script invoked by one of the call*
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// functions above.
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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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// We are only interested in the result of the SetCellColor and GetNamedRanges functions
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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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if (msg.Values.result.value[index.toString()].value.hasOwnProperty('0') &&
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msg.Values.result.value[index.toString()].value['0'].hasOwnProperty('value') &&
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msg.Values.result.value[index.toString()].value.hasOwnProperty('1') &&
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msg.Values.result.value[index.toString()].value['1'].hasOwnProperty('value'))
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result += msg.Values.result.value[index.toString()].value[0].value + ": " +
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msg.Values.result.value[index.toString()].value[1].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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// 'main' code of this <script> block, run when page is being
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// rendered. Install the message listener.
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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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<form id="add-named-range-form">
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Click <button onclick="callAddNamedRange(); return false;">here</button> to add a new named range called
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<input type="text" name="name"> on Sheet1 from (A1 syntax)
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<input type="text" name="x0" value="A" size="1" pattern="[A-Z]{1}"> <input type="number" name="y0", min="1" max="999" value="1"> to
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<input type="text" name="x1" value="B" size="1" pattern="[A-Z]{1}"> <input type="number" name="y1", min="1" max="999" value="3">.
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</form>
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<form id="delete-named-range-form">
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Click <button onclick="callDeleteNamedRange(); return false;">here</button> to delete the named range called <input type="text" name="name">
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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://localhost:9980/loleaflet/dist/loleaflet.html?file_path=file:///libreoffice/online/test/data/hello-world.ods&NotWOPIButIframe=true" height="1000" width="1000"></iframe>
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</body>
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</html>
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