function getTreeLineImgs(levels, treeNode, hasChildren, lastNodeLevels) {
        // this will be checked and src might be changed to img/tree-last.png if
        // this is the last item of a tree node.

        var imgs = [];

        // if this has children, we'll add a tree-parent line but should be
        // absolutely positioned right below the badge.
        if (hasChildren) imgs = [getTreeLine('parent', 'absolute')];

        if (treeNode === 'first') {
            // if first but level > 1, treat this as tree-node (not first).
            if (levels > 1) return getTreeLineImgs(levels, 'node', hasChildren);
        } else {
            // badge node
            imgs.unshift(getTreeLine(treeNode));
        }

        // deeper levels, if any...
        var deeps = [];
        if (levels > 2) {
            var i;
            for (i = 2; i < levels; i++) {
                // if parent symbol is the last in tree, we add space instead of
                // a deeper tree line.
                if (i <= lastNodeLevels) {
                    // add spaces to most-left with unshift
                    deeps.unshift(getTreeLine('space'));
                } else {
                    deeps.push(getTreeLine('deep'));
                }
            }
        }
        imgs = deeps.concat(imgs);
        return imgs.join('');
    }
function getTreeLineImgs(levels, treeNode, hasChildren, lastNodeLevels) {
        
        

        var imgs = [];

        
        
        if (hasChildren) imgs = [getTreeLine('parent', 'absolute')];

        if (treeNode === 'first') {
            
            if (levels > 1) return getTreeLineImgs(levels, 'node', hasChildren);
        } else {
            
            imgs.unshift(getTreeLine(treeNode));
        }

        
        var deeps = [];
        if (levels > 2) {
            var i;
            for (i = 2; i < levels; i++) {
                
                
                if (i <= lastNodeLevels) {
                    
                    deeps.unshift(getTreeLine('space'));
                } else {
                    deeps.push(getTreeLine('deep'));
                }
            }
        }
        imgs = deeps.concat(imgs);
        return imgs.join('');
    }
function getTreeLineImgs ( levels , treeNode , hasChildren , lastNodeLevels ) { // this will be checked and src might be changed to img/tree-last.png if // this is the last item of a tree node. var imgs = [ ] ; // if this has children, we'll add a tree-parent line but should be // absolutely positioned right below the badge. if ( hasChildren ) imgs = [ getTreeLine ( 'parent' , 'absolute' ) ] ; if ( treeNode === 'first' ) { // if first but level > 1, treat this as tree-node (not first). if ( levels > 1 ) return getTreeLineImgs ( levels , 'node' , hasChildren ) ; } else { // badge node imgs . unshift ( getTreeLine ( treeNode ) ) ; } // deeper levels, if any... var deeps = [ ] ; if ( levels > 2 ) { var i ; for ( i = 2 ; i < levels ; i ++ ) { // if parent symbol is the last in tree, we add space instead of // a deeper tree line. if ( i <= lastNodeLevels ) { // add spaces to most-left with unshift deeps . unshift ( getTreeLine ( 'space' ) ) ; } else { deeps . push ( getTreeLine ( 'deep' ) ) ; } } } imgs = deeps . concat ( imgs ) ; return imgs . join ( '' ) ; }
Gets an array of image tags with tree-line images.
This is added in front of the symbol badge and name in the symbols menu.
@private

@param {Number} levels - Number of levels for the current node.
@param {String} treeNode - Kind of tree node. (i.e. 'first'/'parent',
'last' or 'node' (or 'deep' or 'space' which are calculated)).
@param {Boolean} hasChildren - Whether this node has child nodes. (has
its own branch).
@param {Number} lastNodeLevels - The number of levels that the latest node
that was "last" (└─*) in its own tree branch.

@returns {String} - HTML string.
Gets an array of image tags with tree - line images . This is added in front of the symbol badge and name in the symbols menu . @private