Grammalecte  Diff

            }
            return xNode;
        }
        catch (e) {
            showError(e);
        }
    },

    findOriginEditableNode: function (xNode) {
        if (!xNode) {
            return null;
        }
        if (xNode.tagName == "TEXTAREA" || xNode.tagName == "INPUT" || xNode.tagName == "IFRAME") {
            return xNode;
        }
        const findNode = function (xNode) {
            return (!xNode.parentNode.isContentEditable) ? xNode : findNode(xNode.parentNode);
        }
        return findNode(xNode);
    },

    getCaretPosition: function (xElement) {
        // JS awfulness again.
        // recepie from https://stackoverflow.com/questions/4811822/get-a-ranges-start-and-end-offsets-relative-to-its-parent-container
        let nCaretOffsetStart = 0;
        let nCaretOffsetEnd = 0;
        let xSelection = window.getSelection();

        Send messages to the background
        object {
            sCommand: the action to perform
            oParam: parameters necessary for the execution of the action
            oInfo: all kind of informations that needs to be sent back (usually to know where to use the result)
        }
    */

    checkConnection: function () {
        if (!this.xConnect) {
            this.xConnect = browser.runtime.connect({name: "content-script port"});
        }
    },

    parseAndSpellcheck: function (sText, sDestination) {
        this.xConnect.postMessage({
            sCommand: "parseAndSpellcheck",
            oParam: { sText: sText, sCountry: "FR", bDebug: false, bContext: false },
            oInfo: { sDestination: sDestination }
        });
    },

                /*
                    Commands received from the context menu
                    (Context menu are initialized in background)
                */
                // Grammar checker commands
                case "grammar_checker_editable":
                    if (oGrammalecte.xRightClickedNode !== null) {
                        let xNode = oGrammalecte.findOriginEditableNode(oGrammalecte.xRightClickedNode);
                        oGrammalecte.startGCPanel(xNode);
                    } else {
                        oGrammalecte.showMessage("Erreur. Le node sur lequel vous avez cliqué n’a pas pu être identifié. Sélectionnez le texte à corriger et relancez le correcteur via le menu contextuel.");
                    }
                    break;
                case "grammar_checker_page":
                    oGrammalecte.startGCPanel(oGrammalecte.getPageText());
                    break;

    /*
        Other messages from background
    */
    listen2: function () {
        browser.runtime.onMessage.addListener(function (oMessage) {
            let {sActionRequest} = oMessage;
            let xActiveNode = oGrammalecte.findOriginEditableNode(document.activeElement);
            switch (sActionRequest) {
                /*
                    Commands received from the keyboard (shortcuts)
                */
                case "shortcutGrammarChecker":
                    if (xActiveNode && (xActiveNode.tagName == "TEXTAREA" || xActiveNode.tagName == "INPUT" || xActiveNode.isContentEditable)) {
                        oGrammalecte.startGCPanel(xActiveNode);