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mlapptools.m
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classdef (Abstract) mlapptools
% MLAPPTOOLS is a collection of static methods for customizing the
% R2016a-introduced web-based uifigure windows and associated UI elements
% through DOM manipulations.
%
% MLAPPTOOLS' public methods:
%
% aboutJSLibs - Return version information about certain JS libraries.
% addClasses - Add specified CSS classes to one or more DOM nodes.
% addToHead - Inject inline CSS/JS into the <head> section of the figure's HTML.
% fontColor - Modify font color.
% fontWeight - Modify font weight.
% getHTML - Return the full HTML code of a uifigure.
% getWebElements - Extract a webwindow handle and a widget ID from a uifigure control handle.
% getWebWindow - Extract a webwindow handle from a uifigure handle.
% getWidgetInfo - Gather information about a specific dijit widget.
% getWidgetList - Gather information about all dijit widget in a specified uifigure.
% setStyle - Modify a specified style property.
% setTimeout - Override the default timeout for dojo commands, for a specific uifigure.
% textAlign - Modify text alignment.
% unlockUIFig - Allow the uifigure to be opened using an external browser.
% waitForFigureReady - A blocking method that only returns after the uifigure is fully loaded.
%
% See README.md for detailed documentation and examples.
properties (Access = private, Constant = true)
QUERY_TIMEOUT = 5; % Dojo query timeout period, seconds
TAG_TIMEOUT = 'QUERY_TIMEOUT';
DEF_ID_ATTRIBUTE = 'id';
end
methods (Access = public, Static = true)
function [jsLibVersions] = aboutJSLibs()
% A method for getting version info about some JS libararies visible to MATLAB.
% This includes the Dojo Toolkit and ReactJS.
% Test if a *valid* webwindow already exists:
% (Written for compatibility with older releases)
exWW = matlab.internal.webwindowmanager.instance.findAllWebwindows();
validWinID = find(~cellfun(@isempty,strfind({exWW.URL}.','uifigure')),...
1, 'first'); %#ok<STRCLFH>
if isempty(validWinID)
f = uifigure; drawnow; tmpWindowCreated = true;
winID = numel(exWW) + 1;
else
tmpWindowCreated = false;
winID = validWinID;
end
dojoVersion = matlab.internal.webwindowmanager.instance ...
.windowList(winID).executeJS('dojo.version');
reactVersion = matlab.internal.webwindowmanager.instance ...
.windowList(winID).executeJS(...
'require("react/react.min").version;');
if tmpWindowCreated
delete(f);
end
% If MATLAB is sufficiently new, convert the JSON to a struct:
if str2double(subsref(ver('matlab'), substruct('.','Version'))) >= 9.1 %R2016b
dv = jsondecode(dojoVersion);
dojoVersion = char(strrep(join(string(struct2cell(dv)),'.'),'..','.'));
reactVersion = jsondecode(reactVersion);
else
dojoVersion = strsplit(dojoVersion,{':',',','"','}','{'});
dojoVersion = char(strjoin(dojoVersion([3,5,7,10]),'.'));
reactVersion = reactVersion(2:end-1);
end
jsLibVersions = struct('dojo', dojoVersion, 'react_js', reactVersion);
end % aboutJSLibs
function addClasses(hUIElement, cssClasses)
% A method for adding CSS classes to DOM nodes.
% Ensure we end up with a space-delimited list of classes:
if ~ischar(cssClasses) && numel(cssClasses) > 1
classList = strjoin(cssClasses, ' ');
else
classList = cssClasses;
end
if ~isscalar(hUIElement)
arrayfun(@(x)mlapptools.addClasses(x, cssClasses), hUIElement);
else
[hWin, widgetID] = mlapptools.getWebElements(hUIElement);
% Construct a dojo.js statement:
classSetStr = sprintf(...
'dojo.addClass(dojo.query("[%s = ''%s'']")[0], "%s")',...
widgetID.ID_attr, widgetID.ID_val, classList);
% Add the class(es) to the DOM node:
hWin.executeJS(classSetStr);
end
end % addClasses
function addToHead(hWin, nodeText)
% A method for adding nodes (<style>, <script>, ... ) to the HTML <head> section.
% in the future, nodeText could be a local or a remote file path:
if isfile(nodeText)
warning(['Files are not supported at this time.'...
' Please provide a "stringified" input instead.'...
'\nInput can be "<style>...</style>" or "<script>...</script>".'],[]);
elseif ~isempty(regexpi(nodeText,'http(s)?://'))
warning(['Remote files are not supported at this time.',...
' Please provide a "stringified" input instead.'...
'\nInput can be "<style>...</style>" or "<script>...</script>".'],[]);
end
% Inject the nodeText:
hWin.executeJS(['document.head.innerHTML += ', nodeText]);
end % addToHead
function fontColor(hUIElement, color)
% A method for manipulating text color.
color = mlapptools.validateCSScolor(color);
[hWin, widgetID] = mlapptools.getWebElements(hUIElement);
mlapptools.setStyle(hWin, 'color', color, widgetID);
end % fontColor
function fontWeight(hUIElement, weight)
% A method for manipulating font weight, which controls how thick or
% thin characters in text should be displayed.
weight = mlapptools.validateFontWeight(weight);
[hWin, widgetID] = mlapptools.getWebElements(hUIElement);
mlapptools.setStyle(hWin, 'font-weight', weight, widgetID);
end % fontWeight
function [childIDs] = getChildNodeIDs(hWin, widgetID)
% A method for getting all children nodes (commonly <div>) of a specified node.
% Returns a vector WidgetID.
queryStr = sprintf([...
'var W = dojo.query("[%s = ''%s'']").map(',...
'function(node){return node.childNodes;})[0];'],...
widgetID.ID_attr, widgetID.ID_val);
% The [0] above is required because an Array of Arrays is returned.
[~] = hWin.executeJS(queryStr);
% Try to establish an ID:
childIDs = mlapptools.establishIdentities(hWin);
% "Clear" the temporary JS variable
hWin.executeJS('W = undefined');
end % getChildNodeIDs
function [fullHTML] = getHTML(hFigOrWin)
% A method for dumping the HTML code of a uifigure.
% Intended for R2017b (and onward?) where the CEF url cannot be simply opened in
% an external browser.
% Mostly irrelevant for UIFigures as of the introduction of mlapptools.unlockUIFig(...),
% but can be useful for other non-uifigure webwindows.
%% Obtain webwindow handle:
if isa(hFigOrWin,'matlab.ui.Figure')
hWin = mlapptools.getWebWindow(hFigOrWin);
indepWW = false;
else
hWin = hFigOrWin; % rename the handle
%% Attempt to determine if this is an "independent" webwindow:
hF = mlapptools.figFromWebwindow(hWin);
if isempty(hF)
indepWW = true;
else
indepWW = false;
end
end
%% Get HTML according to webwindow type:
if indepWW
[~,hWB] = web(hWin.URL, '-new');
fullHTML = hWB.getHtmlText();
close(hWB);
%% TODO: Try to fix css paths:
% See: https://stackoverflow.com/q/50944935/
%{
% Get all <link> elements:
hWin.executeJS('dojo.query("link")')
% Convert relative paths to absolute:
% Replace paths in HTML:
%}
else
% Get the outer html:
fullHTML = hWin.executeJS('document.documentElement.outerHTML');
% Replace some strings for conversion to work well:
fullHTML = strrep(fullHTML,'%','%%');
fullHTML = strrep(fullHTML,'><','>\n<');
% Append the DOCTYPE header and remove quotes:
fullHTML = sprintf(['<!DOCTYPE HTML>\n' fullHTML(2:end-1)]);
%% Optional things to do with the output:
% Display as web page:
%{
web(['text://' fullHTML]);
%}
% Save as file:
%{
fid = fopen('uifig_raw.html','w');
fprintf(fid,'%s',fullHTML);
fclose(fid);
%}
end
end % getHTML
function [parentID] = getParentNodeID(hWin, widgetID)
% A method for getting the parent node (commonly <div>) of a specified node.
% Returns a scalar WidgetID.
queryStr = sprintf(['var W = dojo.query("[%s = ''%s'']").map(',...
'function(node){return node.parentNode;});'],widgetID.ID_attr, widgetID.ID_val);
[~] = hWin.executeJS(queryStr);
% Try to establish an ID:
parentID = mlapptools.establishIdentities(hWin);
% "Clear" the temporary JS variable
hWin.executeJS('W = undefined');
end % getParentNodeID
function [widgetIDs] = getTableCellID(hUITable, r, c)
% This method returns one or more ID objects, corresponding to specific cells in a
% uitable, as defined by the cells' row and column indices.
%% Constants:
TABLE_CLASS_NAME = 'matlab.ui.control.Table';
CELL_ID_PREFIX = {'variableeditor_views_editors_UITableEditor_'};
%% Input tests:
assert( isa(hUITable, TABLE_CLASS_NAME) && ishandle(hUITable),...
'Invalid uitable handle!');
nR = numel(r); nC = numel(c);
assert( nR == nC, 'The number of elements in r and c must be the same!');
sz = size(hUITable.Data);
assert( all(r <= sz(1)), 'One or more requested rows are out-of-bounds!');
assert( all(c <= sz(2)), 'One or more requested columns are out-of-bounds!');
%% Computing the offset
% If there's more than one uitable in the figure, IDs are assigned
% consecutively. For example, in the case of a 3x3 and 4x4 arrays,
% where the smaller table was created first, IDs are assigned as follows:
%
% [ 0 1 2 [ 9 10 11 12
% 3 4 5 13 14 15 16
% 6 7 8] 17 18 19 20
% 21 22 23 24]
%
% ... which is why if we want to change the 2nd table we need to offset the
% IDs by the total amount of elements in all preceding arrays, which is 9.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Get siblings (flipping to negate that newer children appear first)
hC = flip(hUITable.Parent.Children);
% Find which of them is a table:
hC = hC( arrayfun(@(x)isa(x, TABLE_CLASS_NAME), hC) );
% Find the position of the current table in the list, and count the elements of
% all preceding tables:
offset = sum(arrayfun(@(x)numel(x.Data), hC(1:find(hC == hUITable)-1)));
% Compute indices, r and c are reversed due to row-major ordering of the IDs
idx = sub2ind(sz, c, r) + offset - 1; % -1 because JS IDs are 0-based
idc = strcat(CELL_ID_PREFIX, num2str(idx(:)));
% Preallocation:
widgetIDs(nR,1) = WidgetID;
% Get the window handle so we could execute some JS commands:
hWin = mlapptools.getWebWindow(hUITable);
% ID array population:
for indI = 1:numel(idx)
jsCommand = sprintf('dojo.byId(%s).childNodes[0].id', idc{indI});
textFieldID = hWin.executeJS(jsCommand);
widgetIDs(indI) = WidgetID(mlapptools.DEF_ID_ATTRIBUTE, textFieldID(2:end-1) );
end
end % getTableCellID
function [hWin, widgetID] = getWebElements(hUIElement)
% A method for obtaining the webwindow handle and the widget ID corresponding
% to the provided ui control (aka web component).
% Get a handle to the webwindow
hWin = mlapptools.getWebWindow(hUIElement);
mlapptools.waitTillWebwindowLoaded( hWin, ...
ancestor(hUIElement, 'matlab.ui.Figure') );
% Find which element of the DOM we want to edit
switch hUIElement.Type
case 'uitreenode'
p = hUIElement.Parent;
if ~isa(p,'matlab.ui.container.Tree')
p.expand(); % The row must be visible to apply changes
end
warnState = mlapptools.toggleWarnings('off');
widgetID = WidgetID('data-test-id', char(struct(hUIElement).NodeId));
warning(warnState); % Restore warning state
case {'uipanel', 'figure', 'uitabgroup', 'uitab', ...
'uiswitch', 'uitoggleswitch', 'uirockerswitch'}
widgetID = WidgetID('data-tag', mlapptools.getDataTag(uiElement));
case 'uitable'
TAB_PREFIX = "mgg_";
% Notes:
% 1) uitables are inconsistent with other elements, their id always starts with
% "mgg_". So we list all widgets and select the "table-suspects" among them.
% 2) It's probably more useful to style the individual cells rather than the
% table itself. See: getTableCellID
% 3) The listing is not necessary, as it is possible to search for nodes
% having a property that starts with a certain string: E[foo^="bar"]
%{
web(['http://dojotoolkit.org/reference-guide/1.10/dojo/query.html',...
'#additional-selectors-supported-by-lite-engine'], '-browser');
%}
[~,tmp] = mlapptools.getWidgetList( ancestor(hUIElement,'figure') );
widgetID = arrayfun(@(x)WidgetID(mlapptools.DEF_ID_ATTRIBUTE, x), ...
string(tmp.id(contains(tmp.id, TAB_PREFIX))));
case 'axes'
switch subsref(ver('matlab'), substruct('.','Version'))
case {'9.6'} % R2019a
descendType = 'img';
otherwise % R2016a-R2018b
descendType = 'canvas';
% This canvas has a context of type "webgl".
% See also: https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API
warning(['UIAxes object detected. Returning the innermost <canvas> element. '...
'Be advised that mlapptools cannot modify this element, which '...
'instead requires using WebGL commands via `hWin.executeJS(...)`.']);
end
widgetID = mlapptools.getDecendentOfType( ...
hWin, mlapptools.getDataTag(hUIElement), descendType);
otherwise % default:
widgetID = mlapptools.getWidgetID(hWin, mlapptools.getDataTag(hUIElement));
end
end % getWebElements
function [hWin] = getWebWindow(hUIElement)
warnState = mlapptools.toggleWarnings('off');
% Make sure we got a valid handle
% Check to make sure we're addressing the parent figure window,
% catches the case where the parent is a UIPanel or similar
hUIFig = ancestor(hUIElement, 'figure');
mlapptools.waitTillFigureLoaded(hUIFig);
% Since the above checks if a Controller exists, the below should work.
hController = struct(struct(hUIFig).Controller);
% Check for Controller version:
switch subsref(ver('matlab'), substruct('.','Version'))
case {'9.0','9.1'} % R2016a or R2016b
hWin = hController.Container.CEF;
otherwise % R2017a onward
hWin = struct(hController.PlatformHost).CEF;
end
warning(warnState); % Restore warning state
end % getWebWindow
function [nfo] = getWidgetInfo(hWin, widgetID, verboseFlag)
% A method for gathering information about a specific dijit widget, if its
% HTML div id is known.
if ~strcmp(widgetID.ID_attr,'widgetid')
warning('getWidgetInfo:InappropriateIDAttribute',...
'This method requires widgets identified by a ''widgetid'' attribute.');
nfo = struct([]);
return
end
%% Handling required positional inputs:
assert(nargin >= 2,'mlapptools:getWidgetInfo:insufficientInputs',...
'getWidgetInfo must be called with at least 2 inputs.');
%% Handling optional inputs:
if nargin < 3 || isempty(verboseFlag)
verboseFlag = false;
end
%% Querying dijit
hWin.executeJS(['var W; require(["dijit/registry"], '...
'function(registry){W = registry.byId("' widgetID.ID_val '");}); W = [W];']);
% Decoding
try
nfo = mlapptools.decodeDijitRegistryResult(hWin,verboseFlag);
catch ME
switch ME.identifier
case 'mlapptools:decodeDijitRegistryResult:noSuchWidget'
warning(ME.identifier, '%s', ME.message);
otherwise
warning('mlapptools:getWidgetInfo:unknownDecodingError',...
'Decoding failed for an unexpected reason: %s', ME.message);
end
nfo = [];
end
% "Clear" the temporary JS variable
hWin.executeJS('W = undefined');
end % getWidgetInfo
function varargout = getWidgetList(hUIFig, verboseFlag)
% A method for listing all dijit widgets in a uifigure.
warnState = mlapptools.toggleWarnings('off');
%% Handle missing inputs:
if nargin < 1 || isempty(hUIFig) || ~mlapptools.isUIFigure(hUIFig)
throw(MException('mlapptools:getWidgetList:noHandleProvided',...
'Please provide a valid UIFigure handle as a first input.'));
end
warning(warnState); % Restore warning state
if nargin < 2 || isempty(verboseFlag)
verboseFlag = false;
end
%% Process uifigure:
hWin = mlapptools.getWebWindow(hUIFig);
% Extract widgets from dijit registry:
hWin.executeJS(['var W; require(["dijit/registry"], '...
' function(registry){W = registry.toArray();});']);
widgets = mlapptools.decodeDijitRegistryResult(hWin, verboseFlag);
% "Clear" the temporary JS variable
hWin.executeJS('W = undefined');
%% Assign outputs:
varargout{1} = widgets;
if nargout == 2
% Convert to a single table:
varargout{2} = struct2table(mlapptools.unifyStructs(widgets));
end % getWidgetList
end
function varargout = setStyle(varargin)
% A method providing an interface for modifying style attributes of uicontrols.
%
% WARNING: Due to the large amount of available style attributes and
% corresponding settings, input checking is not performed. As this
% might lead to unexpected results or errors - USE AT YOUR OWN RISK!
%
% "Overloads":
% 3-parameter call:
% widgetID = setStyle(hControl, styleAttr, styleValue)
% 4-parameter call:
% setStyle(hWin, styleAttr, styleValue, widgetID)
narginchk(3,4);
% Unpack inputs:
styleAttr = varargin{2};
styleValue = varargin{3};
switch nargin
case 3
hUIElement = varargin{1};
% Get a handle to the webwindow
[hWin, widgetID] = mlapptools.getWebElements(hUIElement);
case 4
% By the time we have a WidgetID object, the webwindow handle is available
hWin = varargin{1};
widgetID = varargin{4};
end
% Handle the case of a non-scalar widgetID recursively:
if ~isscalar(widgetID)
arrayfun(@(x)mlapptools.setStyle(hWin, styleAttr, styleValue, x), widgetID);
else
styleSetStr = sprintf('dojo.style(dojo.query("[%s = ''%s'']")[0], "%s", "%s")',...
widgetID.ID_attr, widgetID.ID_val, styleAttr, styleValue);
% ^ this might result in junk if widgetId=='null'.
try
hWin.executeJS(styleSetStr);
% ^ this might crash in case of invalid styleAttr/styleValue.
catch ME
% Test for "Invalid or unexpected token":
ME = mlapptools.checkJavascriptSyntaxError(ME, styleSetStr);
rethrow(ME);
end
end
% Assign outputs:
if nargout >= 1
varargout{1} = widgetID;
end
end % setStyle
function setTimeout(hUIFig, newTimeoutInSec)
% Sets a custom timeout for dojo queries, specified in [s].
setappdata(hUIFig, mlapptools.TAG_TIMEOUT, newTimeoutInSec);
end
function textAlign(hUIElement, alignment)
% A method for manipulating text alignment.
alignment = lower(alignment);
mlapptools.validateAlignmentStr(alignment)
[hWin, widgetID] = mlapptools.getWebElements(hUIElement);
mlapptools.setStyle(hWin, 'textAlign', alignment, widgetID);
end % textAlign
function unlockUIFig(hUIFig)
% This method allows the uifigure to be opened in an external browser,
% as was possible before R2017b.
assert(checkCert(), 'Certificate not imported; cannot proceed.');
if verLessThan('matlab','9.3')
% Do nothing, since this is not required pre-R2017b.
else
struct(hUIFig).Controller.ProxyView.PeerNode.setProperty('hostType','""');
end
function tf = checkCert()
% This tools works on the OS-level, and was tested on Win 7 & 10.
%
% With certain browsers it might not be required/helpful as noted in
% https://askubuntu.com/questions/73287/#comment1533817_94861 :
% Note that Chromium and Firefox do not use the system CA certificates,
% so require separate instructions.
% - In Chromium, visit chrome://settings/certificates, click Authorities,
% then click import, and select your .pem.
% - In Firefox, visit about:preferences#privacy, click Certificates,
% View Certificates, Authorities, then click Import and select your .pem.
SUCCESS_CODE = 0;
CL = connector.getCertificateLocation(); % certificate location;
if isempty(CL), CL = fullfile(prefdir, 'thisMatlab.pem'); end
%% Test if certificate is already accepted:
switch true
case ispc
[s,c] = system('certutil -verifystore -user "Root" localhost');
case isunix
[s,c] = system(['openssl crl2pkcs7 -nocrl -certfile '...
'/etc/ssl/certs/ca-certificates.crt '...
'| openssl pkcs7 -print_certs -noout '...
'| grep ''^issuer=/C=US/O=company/CN=localhost/OU=engineering''']);
case ismac
[s,c] = system('security find-certificate -c "localhost"');
end
isAccepted = s == SUCCESS_CODE;
%% Try to import certificate:
if isAccepted
wasImported = false;
else
reply = questdlg('Certificate not found. Would you like to import it?',...
'Import "localhost" certificate','Yes','No','Yes');
if strcmp(reply,'Yes'), switch true %#ok<ALIGN>
case ispc
[s,c] = system(['certutil -addstore -user "Root" ' CL]);
% %APPDATA%\MathWorks\MATLAB\R20##x\thisMatlab.pem
case isunix
[s,c] = system(['sudo cp ' CL ...
' /usr/local/share/ca-certificates/localhost-matlab.crt && ',...
'sudo update-ca-certificates']);
% ~/.matlab/thisMatlab.pem
case ismac % https://apple.stackexchange.com/a/80625
[s,c] = system(['security add-trusted-cert -d -r trustRoot -p ssl -k ' ...
'"$HOME/Library/Keychains/login.keychain" ' CL]);
% ~/Library/Application\ Support/MathWorks/MATLAB/R20##x/thisMatlab.pem
end % switch
wasImported = s == SUCCESS_CODE;
else
warning('Certificate import cancelled by user!');
wasImported = false;
end
end
%% Report result
tf = isAccepted || wasImported;
if wasImported
fprintf(1, '\n%s\n%s\n%s\n',...
['Certificate import successful! You should now be '...
'able to navigate to the webwindow URL in your browser.'],...
['If the figure is still blank, recreate it and navigate '...
'to the new URL.'],...
['Also, if you have a script blocking addon (e.g. NoScript), '...
'be sure to whitelist "localhost".']);
elseif ~isAccepted % && ~wasImported (implicitly)
disp(c);
fprintf(1, '\n%s\n%s\n\t%s\n\t%s\n%s\n',...
'Either certificate presence cannot be determined, or the import failed.',...
'If you''re using Chromium or Firefox you can follow these instructions:',...
['- In Chromium, visit chrome://settings > (Show advanced) > '...
'Manage HTTP/SSL certificates > Trusted Root Certification Authorities Tab'...
' > Import, and select your .pem.'],...
['- In Firefox, visit about:preferences#privacy, click Certificates > ',...
'View Certificates > Authorities > Import, and select your .pem.'],...
['The certificate is found here: ' CL ]);
end
end % checkCert
end % unlockUIFig
function hWin = waitForFigureReady(hUIFig)
% This blocking method waits until a UIFigure and its widgets have fully loaded.
%% Make sure that the handle is valid:
assert(mlapptools.isUIFigure(hUIFig),...
'mlapptools:getWebWindow:NotUIFigure',...
'The provided window handle is not of a UIFigure.');
assert(strcmp(hUIFig.Visible,'on'),...
'mlapptools:getWebWindow:FigureNotVisible',...
'Invisible figures are not supported.');
%% Wait for the figure to appear:
mlapptools.waitTillFigureLoaded(hUIFig);
%% Make sure that Dojo is ready:
% Get a handle to the webwindow
hWin = mlapptools.getWebWindow(hUIFig);
mlapptools.waitTillWebwindowLoaded(hWin, hUIFig);
end % waitForFigureReady
end % Public Static Methods
methods (Static = true, Access = private)
function ME = checkJavascriptSyntaxError(ME, styleSetStr)
if (strcmp(ME.identifier,'cefclient:webwindow:jserror'))
c = strfind(ME.message,'Uncaught SyntaxError:');
if ~isempty(c)
v = str2double(regexp(ME.message(c:end),'-?\d+\.?\d*|-?\d*\.?\d+','match'));
msg = ['Syntax error: unexpected token in styleValue: ' styleSetStr(v(1),v(2))];
causeException = MException('mlapptools:setStyle:invalidInputs',msg);
ME = addCause(ME,causeException);
end
end
end % checkJavascriptSyntaxError
function widgets = decodeDijitRegistryResult(hWin, verboseFlag)
% As this method relies heavily on jsondecode, it is only supported on R >= 2016b
assert(strcmp('true', hWin.executeJS(...
'this.hasOwnProperty("W") && W !== undefined && W instanceof Array && W.length > 0')),...
'mlapptools:decodeDijitRegistryResult:noSuchWidget',...
'The dijit registry doesn''t contain the specified widgetID.');
% Now that we know that W exists, let's try to decode it.
n = str2double(hWin.executeJS('W.length;'));
widgets = cell(n,1);
% Get the JSON representing the widget, then try to decode, while catching circular references
for ind1 = 1:n
try
widgets{ind1} = jsondecode(hWin.executeJS(sprintf('W[%d]', ind1-1)));
catch % handle circular references:
if verboseFlag
disp(['Node #' num2str(ind1-1) ' with id ' hWin.executeJS(sprintf('W[%d].id', ind1-1))...
' could not be fully converted. Attempting fallback...']);
end
props = jsondecode(hWin.executeJS(sprintf('Object.keys(W[%d])', ind1-1)));
tmp = mlapptools.emptyStructWithFields(props);
validProps = fieldnames(tmp);
for indP = 1:numel(validProps)
try
tmp.(validProps{indP}) = jsondecode(hWin.executeJS(sprintf(['W[%d].' props{indP}], ind1-1)));
catch
% Fallback could be executed recursively for all problematic field
% (to keep the most data), but for now do nothing.
end
end
widgets{ind1} = tmp;
clear props validProps tmp
end
end
end % decodeDijitRegistryResult
function eStruct = emptyStructWithFields(fields)
% A convenience method for creating an empty scalar struct with specific field
% names.
% INPUTS:
% fields - cell array of strings representing the required fieldnames.
tmp = [ matlab.lang.makeValidName(fields(:)), cell(numel(fields),1)].';
eStruct = struct(tmp{:});
end % emptyStructWithFields
function [widgetID] = establishIdentities(hWin) % throws AssertionError
% A method for generating WidgetID objects from a list of DOM nodes.
assert(strcmp('true', hWin.executeJS([...
'this.hasOwnProperty("W") && W !== undefined && ' ...
'(W instanceof NodeList || W instanceof Array) && W.length > 0'])),...
'mlapptools:establishIdentities:noSuchNode',...
'No nodes meet the condition.');
attrs = {'widgetid', 'id', 'data-tag', 'data-reactid'};
nA = numel(attrs);
%% Preallocate output:
widgetID(hWin.executeJS('W.length') - '0', 1) = WidgetID; % "str2double"
%%
for indW = 1:numel(widgetID)
for indA = 1:nA
% Get the attribute value:
ID = hWin.executeJS(sprintf('W[%d].getAttribute("%s")', indW-1, attrs{indA}));
% Test result validity:
if ~strcmp(ID,'null')
% Create a WidgetID object and proceed to the next element in W:
widgetID(indW) = WidgetID(attrs{indA}, ID(2:end-1));
break
end
if indA == nA
% Reaching this point means that the break didn't trigger for any of the attributes.
warning('The node''s ID could not be established using common attributes.');
end
end
end
end % establishIdentity
function [dataTag] = getDataTag(hUIElement)
warnState = mlapptools.toggleWarnings('off');
dataTag = char( struct(hUIElement).Controller.ProxyView.PeerNode.getId() );
warning(warnState);
end % getDataTag
function [widgetID] = getDecendentOfType(hWin, ancestorDataTag, descendentType)
% This method returns a node's first descendent of a specified <type>.
% See also:
% https://dojotoolkit.org/reference-guide/1.10/dojo/query.html#standard-css2-selectors
widgetquerystr = sprintf(...
'dojo.getAttr(dojo.query("[data-tag^=''%s''] %s")[0], "%s")', ...
ancestorDataTag, descendentType, mlapptools.DEF_ID_ATTRIBUTE);
try % should work for most UI objects
ID = hWin.executeJS(widgetquerystr);
if ~strcmpi(ID,'null')
widgetID = WidgetID(mlapptools.DEF_ID_ATTRIBUTE, ID(2:end-1));
return
end
catch
warning(['Error encountered while obtaining a descendent of ', ancestorDataTag]);
end
% If the JS command failed, or no descendent found, return an empty WidgetID object.
widgetID = WidgetID();
end % getDecendentOfType
function hFig = figFromWebwindow(hWin)
% Using this method is discouraged as it's relatively computation-intensive.
% Since the figure handle is not a property of the webwindow or its children
% (to our best knowledge), we must list all figures and check which of them
% is associated with the input webwindow.
hFigs = findall(groot, 'Type', 'figure');
warnState = mlapptools.toggleWarnings('off');
% Distinguish java figures from web figures:
hUIFigs = hFigs(arrayfun(@(x)isstruct(struct(x).ControllerInfo), hFigs));
% hUIFigs = hFigs(arrayfun(@matlab.ui.internal.isUIFigure, hFigs)); % "official" way?
if isempty(hUIFigs)
hFig = gobjects(0);
return
end
hUIFigs = hUIFigs(strcmp({hUIFigs.Visible},'on')); % Hidden figures are ignored
ww = arrayfun(@mlapptools.getWebWindow, hUIFigs);
warning(warnState); % Restore warning state
hFig = hFigs(hWin == ww);
end % figFromWebwindow
function [widgetID] = getWidgetID(hWin, dataTag)
% This method returns an object containing some uniquely-identifying information
% about a DOM node.
widgetquerystr = sprintf(...
'dojo.getAttr(dojo.query("[data-tag^=''%s''] > div")[0], "widgetid")', dataTag);
try % should work for most UI objects
ID = hWin.executeJS(widgetquerystr);
widgetID = WidgetID(mlapptools.DEF_ID_ATTRIBUTE, ID(2:end-1));
catch % fallback for problematic objects
warning('This widget is unsupported.');
% widgetID = mlapptools.getWidgetIDFromDijit(hWin, data_tag);
end
end % getWidgetID
function widgetID = getWidgetIDFromDijit(hWin, dataTag)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% EXPERIMENTAL METHOD!!!
hWin.executeJS(['var W; require(["dijit/registry"], '...
'function(registry){W = registry.toArray().map(x => x.domNode.childNodes);});']);
nWidgets = jsondecode(hWin.executeJS('W.length'));
try
for ind1 = 0:nWidgets-1
nChild = jsondecode(hWin.executeJS(sprintf('W[%d].length',ind1)));
for ind2 = 0:nChild-1
tmp = hWin.executeJS(sprintf('W[%d][%d].dataset',ind1,ind2));
if isempty(tmp)
continue
else
tmp = jsondecode(tmp);
end
if isfield(tmp,'tag') && strcmp(tmp.tag,dataTag)
ID = hWin.executeJS(sprintf('dojo.getAttr(W[%d][%d].parentNode,"widgetid")',ind1,ind2));
error('Bailout!');
end
end
end
widgetID = WidgetID('','');
catch
% Fix for the case of top-level tree nodes:
switch tmp.type
case 'matlab.ui.container.TreeNode'
tmp = jsondecode(hWin.executeJS(sprintf(...
'dojo.byId(%s).childNodes[0].childNodes[0].childNodes[0].childNodes[%d].dataset',...
ID(2:end-1),ind2-1)));
widgetID = WidgetID('data-reactid', tmp.reactid);
end
end
end % getWidgetIDFromDijit
function to = getTimeout(hUIFig)
if isempty(hUIFig) || ~isa(hUIFig, 'matlab.ui.Figure')
to = mlapptools.QUERY_TIMEOUT;
else
to = getappdata(hUIFig, mlapptools.TAG_TIMEOUT);
if isempty(to), to = mlapptools.QUERY_TIMEOUT; end
end
end % getTimeout
function tf = isUIFigure(hFigList)
tf = arrayfun(@(x)isa(x,'matlab.ui.Figure') && ...
isstruct(struct(x).ControllerInfo), hFigList);
% See also: matlab.ui.internal.isUIFigure()
end % isUIFigure
function oldState = toggleWarnings(toggleStr)
OJF = 'MATLAB:HandleGraphics:ObsoletedProperty:JavaFrame';
SOO = 'MATLAB:structOnObject';
if nargout > 0
oldState = [warning('query',OJF); warning('query',SOO)];
end
switch lower(toggleStr)
case 'on'
warning('on',OJF);
warning('on',SOO);
case 'off'
warning('off',OJF);
warning('off',SOO);
otherwise
warning(['Unrecognized option "' toggleStr '". Please use either "on" or "off".']);
end
end % toggleWarnings
function uStruct = unifyStructs(cellOfStructs)
% A method for merging structs having *some* overlapping field names.
fields = cellfun(@fieldnames, cellOfStructs, 'UniformOutput', false);
uFields = unique(vertcat(fields{:}));
sz = numel(cellOfStructs);
uStruct = repmat(mlapptools.emptyStructWithFields(uFields),sz,1);
for ind1 = 1:sz
fields = fieldnames(cellOfStructs{ind1});
for ind2 = 1:numel(fields)
uStruct(ind1).(fields{ind2}) = cellOfStructs{ind1}.(fields{ind2});
end
end
end % unifyStructs
function validateAlignmentStr(alignment)
if ~ischar(alignment)
msgID = 'mlapptools:alignstring:InvalidInputIype';
error(msgID, 'Expected ''%s'', inputs of type ''%s'' not supported', ...
class('Dev-il'), class(alignment));
end
validstr = {'left', 'right', 'center', 'justify', 'initial'};
if ~any(ismember(validstr, alignment))
msgID = 'mlapptools:alignstring:InvalidAlignmentString';
error(msgID, 'Invalid string alignment specified: ''%s''', alignment);
end
end % validateAlignmentStr
function [color] = validateCSScolor(color)
% TODO
end % validateCSScolor
function [weight] = validateFontWeight(weight)
if ischar(weight)
weight = lower(weight);
validstrs = {'normal', 'bold', 'bolder', 'lighter', 'initial'};
if ~any(ismember(weight, validstrs))
msgID = 'mlapptools:fontWeight:InvalidFontWeightString';
error(msgID, 'Invalid font weight specified: ''%s''', weight);
end
elseif isnumeric(weight)
weight = round(weight, -2);
if weight < 100
weight = 100;
elseif weight > 900
weight = 900;
end
weight = num2str(weight);
else
msgID = 'mlapptools:fontWeight:InvalidFontWeight';
error(msgID, 'Invalid font weight specified: ''%s''', weight);
end
end % validateFontWeight
function waitTillFigureLoaded(hUIFig)
% A blocking method that ensures a UIFigure has fully loaded.
warnState = mlapptools.toggleWarnings('off');
to = mlapptools.getTimeout(hUIFig);
tic
while (toc < to) && isempty(struct(hUIFig).Controller)
pause(0.01)
end
if toc > to
msgID = 'mlapptools:waitTillFigureLoaded:TimeoutReached';
error(msgID, ...
['Waiting for the figure to load has timed out after %u seconds. ' ...
'Try increasing the timeout. If the figure clearly loaded in time, yet '...
'this error remains - it might be a bug in the tool! ' ...
'Please let the developers know through GitHub.'], ...
to);
end
warning(warnState);
end % waitTillFigureLoaded
function waitTillWebwindowLoaded(hWin, hUIFig)
% A blocking method that ensures a certain webwindow has fully loaded.
try
if nargin < 2
hUIFig = mlapptools.figFromWebwindow(hWin);
end
to = mlapptools.getTimeout(hUIFig);
catch % possible workaround for R2017a:
to = mlapptools.getTimeout([]);
end
tic
while (toc < to) && ~jsondecode(hWin.executeJS(...
'this.hasOwnProperty("require") && require !== undefined && typeof(require) === "function"'))
pause(0.01)
end
if toc > to
msgID = 'mlapptools:waitTillWebwindowLoaded:TimeoutReached';
error(msgID, ...
['Waiting for the webwindow to load has timed out after %u seconds. ' ...
'Try increasing the timeout. If the figure clearly loaded in time, yet '...
'this error remains - it might be a bug in the tool! ' ...
'Please let the developers know through GitHub.'], ...
to);
else
hWin.executeJS('require(["dojo/ready"], function(ready){});');
end
end % waitTillWebwindowLoaded
function htmlRootPath = getFullPathFromWW(hWin)
% Get a local href value, e.g. from an included main.css
href = hWin.executeJS('document.body.getElementsByTagName("link")[0].href');
htmlRootPath = hWin.executeJS(['var link = document.createElement("a"); link.href = ' href ';']);
end
end % Private Static Methods
end % classdef
%{
--- Useful debugging commands ---
jsprops = sort(jsondecode(hWin.executeJS('Object.keys(this)')));
ReactJS:
hWin.executeJS('var R = require("react/react.min"); Object.keys(R)')
hWin.executeJS('var R = require("react/react-dom.min"); Object.keys(R)')
%}