Function diffLayout

src/plot_api/plot_api.js:2808–2864

(gd, oldFullLayout, newFullLayout, immutable, transition)

}

function diffLayout(gd, oldFullLayout, newFullLayout, immutable, transition) {
    var flags = editTypes.layoutFlags();
    flags.arrays = {};
    flags.rangesAltered = {};
    flags.nChanges = 0;
    flags.nChangesAnim = 0;

    function getLayoutValObject(parts) {
        return PlotSchema.getLayoutValObject(newFullLayout, parts);
    }

    // Clear out any _inputDomain that's no longer valid
    for (var key in newFullLayout) {
        if (!key.startsWith('xaxis') && !key.startsWith('yaxis')) {
            continue;
        }
        if (!oldFullLayout[key]) {
            continue;
        }
        var newDomain = newFullLayout[key].domain;
        var oldDomain = oldFullLayout[key].domain;
        var oldInputDomain = oldFullLayout[key]._inputDomain;
        if (oldFullLayout[key]._inputDomain) {
            if (newDomain[0] === oldInputDomain[0] && newDomain[1] === oldInputDomain[1]) {
                // what you're asking for hasn't changed, so let plotly.js start with what it
                // concluded last time and iterate from there
                newFullLayout[key].domain = oldFullLayout[key].domain;
            } else if (newDomain[0] !== oldDomain[0] || newDomain[1] !== oldDomain[1]) {
                // what you're asking for HAS changed, so clear _inputDomain and let us start from scratch
                newFullLayout[key]._inputDomain = null;
            }
            // We skip the else case (newDomain !== oldInputDomain && newDomain === oldDomain)
            // because it's likely that if the newDomain and oldDomain are the same, the user
            // passed in the same layout object and we should keep the _inputDomain.
        }
    }

    var diffOpts = {
        getValObject: getLayoutValObject,
        flags: flags,
        immutable: immutable,
        transition: transition,
        gd: gd
    };

    getDiffFlags(oldFullLayout, newFullLayout, [], diffOpts);

    if (flags.plot || flags.calc) {
        flags.layoutReplot = true;
    }

    if (transition && flags.nChanges && flags.nChangesAnim) {
        flags.anim = flags.nChanges === flags.nChangesAnim ? 'all' : 'some';
    }

    return flags;
}