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public/vendor/pagedown/Markdown.Editor.js  view on Meta::CPAN

            }
            var that = this;
            // The function to be executed when you enter a link and press OK or Cancel.
            // Marks up the link and adds the ref.
            var linkEnteredCallback = function (link) {

                background.parentNode.removeChild(background);

                if (link !== null) {
                    // (                          $1
                    //     [^\\]                  anything that's not a backslash
                    //     (?:\\\\)*              an even number (this includes zero) of backslashes
                    // )
                    // (?=                        followed by
                    //     [[\]]                  an opening or closing bracket
                    // )
                    //
                    // In other words, a non-escaped bracket. These have to be escaped now to make sure they
                    // don't count as the end of the link or similar.
                    // Note that the actual bracket has to be a lookahead, because (in case of to subsequent brackets),
                    // the bracket in one match may be the "not a backslash" character in the next match, so it
                    // should not be consumed by the first match.
                    // The "prepend a space and finally remove it" steps makes sure there is a "not a backslash" at the
                    // start of the string, so this also works if the selection begins with a bracket. We cannot solve
                    // this by anchoring with ^, because in the case that the selection starts with two brackets, this
                    // would mean a zero-width match at the start. Since zero-width matches advance the string position,
                    // the first bracket could then not act as the "not a backslash" for the second.
                    chunk.selection = (" " + chunk.selection).replace(/([^\\](?:\\\\)*)(?=[[\]])/g, "$1\\").substr(1);
                    
                    var linkDef = " [999]: " + properlyEncoded(link);

                    var num = that.addLinkDef(chunk, linkDef);
                    chunk.startTag = isImage ? "![" : "[";
                    chunk.endTag = "][" + num + "]";

                    if (!chunk.selection) {
                        if (isImage) {
                            chunk.selection = that.getString("imagedescription");
                        }
                        else {
                            chunk.selection = that.getString("linkdescription");
                        }
                    }
                }
                postProcessing();
            };

            background = ui.createBackground();

            if (isImage) {
                if (!this.hooks.insertImageDialog(linkEnteredCallback))
                    ui.prompt(this.getString("imagedialog"), imageDefaultText, linkEnteredCallback);
            }
            else {
                ui.prompt(this.getString("linkdialog"), linkDefaultText, linkEnteredCallback);
            }
            return true;
        }
    };

    // When making a list, hitting shift-enter will put your cursor on the next line
    // at the current indent level.
    commandProto.doAutoindent = function (chunk, postProcessing) {

        var commandMgr = this,
            fakeSelection = false;

        chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]*\n$/, "\n\n");
        chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}>[ \t]*\n$/, "\n\n");
        chunk.before = chunk.before.replace(/(\n|^)[ \t]+\n$/, "\n\n");
        
        // There's no selection, end the cursor wasn't at the end of the line:
        // The user wants to split the current list item / code line / blockquote line
        // (for the latter it doesn't really matter) in two. Temporarily select the
        // (rest of the) line to achieve this.
        if (!chunk.selection && !/^[ \t]*(?:\n|$)/.test(chunk.after)) {
            chunk.after = chunk.after.replace(/^[^\n]*/, function (wholeMatch) {
                chunk.selection = wholeMatch;
                return "";
            });
            fakeSelection = true;
        }

        if (/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]+.*\n$/.test(chunk.before)) {
            if (commandMgr.doList) {
                commandMgr.doList(chunk);
            }
        }
        if (/(\n|^)[ ]{0,3}>[ \t]+.*\n$/.test(chunk.before)) {
            if (commandMgr.doBlockquote) {
                commandMgr.doBlockquote(chunk);
            }
        }
        if (/(\n|^)(\t|[ ]{4,}).*\n$/.test(chunk.before)) {
            if (commandMgr.doCode) {
                commandMgr.doCode(chunk);
            }
        }
        
        if (fakeSelection) {
            chunk.after = chunk.selection + chunk.after;
            chunk.selection = "";
        }
    };

    commandProto.doBlockquote = function (chunk, postProcessing) {

        chunk.selection = chunk.selection.replace(/^(\n*)([^\r]+?)(\n*)$/,
            function (totalMatch, newlinesBefore, text, newlinesAfter) {
                chunk.before += newlinesBefore;
                chunk.after = newlinesAfter + chunk.after;
                return text;
            });

        chunk.before = chunk.before.replace(/(>[ \t]*)$/,
            function (totalMatch, blankLine) {
                chunk.selection = blankLine + chunk.selection;
                return "";
            });

        chunk.selection = chunk.selection.replace(/^(\s|>)+$/, "");
        chunk.selection = chunk.selection || this.getString("quoteexample");

        // The original code uses a regular expression to find out how much of the
        // text *directly before* the selection already was a blockquote:

        /*
        if (chunk.before) {
        chunk.before = chunk.before.replace(/\n?$/, "\n");
        }
        chunk.before = chunk.before.replace(/(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*$)/,
        function (totalMatch) {