rearranging order of some functions, marking some of them private

git-svn-id: http://svn.openlayers.org/trunk/openlayers@891 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Grid.js

@@ -24,6 +24,7 @@ OpenLayers.Layer.Grid.prototype =
      * @type boolean */
     alpha: false,
 
+
     /**
      * @constructor
      * 
@@ -196,90 +197,6 @@ OpenLayers.Layer.Grid.prototype =
 
     },
     
-    /**
-     * @param {Boolean} prepend if true, prepend to beginning.
-     *                          if false, then append to end
-     */
-    insertRow:function(prepend) {
-        var modelRowIndex = (prepend) ? 0 : (this.grid.length - 1);
-        var modelRow = this.grid[modelRowIndex];
-
-        var newRow = new Array();
-
-        var resolution = this.map.getResolution();
-        var deltaY = (prepend) ? -this.tileSize.h : this.tileSize.h;
-        var deltaLat = resolution * -deltaY;
-
-        for (var i=0; i < modelRow.length; i++) {
-            var modelTile = modelRow[i];
-            var bounds = modelTile.bounds.copyOf();
-            var position = modelTile.position.copyOf();
-            bounds.bottom = bounds.bottom + deltaLat;
-            bounds.top = bounds.top + deltaLat;
-            position.y = position.y + deltaY;
-            var newTile = this.addTile(bounds, position);
-            newTile.draw(this.alpha);
-            newRow.append(newTile);
-        }
-        
-        if (newRow.length>0){
-            if (prepend) {
-                this.grid.prepend(newRow);
-            } else {
-                this.grid.append(newRow);
-            }
-        }       
-    },
-
-    /**
-     * @param {Boolean} prepend if true, prepend to beginning.
-     *                          if false, then append to end
-     */
-    insertColumn:function(prepend) {
-        var modelCellIndex;
-        var deltaX = (prepend) ? -this.tileSize.w : this.tileSize.w;
-        var resolution = this.map.getResolution();
-        var deltaLon = resolution * deltaX;
-
-        for (var i=0; i<this.grid.length; i++) {
-            var row = this.grid[i];
-            modelTileIndex = (prepend) ? 0 : (row.length - 1);
-            var modelTile = row[modelTileIndex];
-            
-            var bounds = modelTile.bounds.copyOf();
-            var position = modelTile.position.copyOf();
-            bounds.left = bounds.left + deltaLon;
-            bounds.right = bounds.right + deltaLon;
-            position.x = position.x + deltaX;
-            var newTile = this.addTile(bounds, position);
-            newTile.draw(this.alpha);
-            
-            if (prepend) {
-                row = row.prepend(newTile);
-            } else {
-                row = row.append(newTile);
-            }
-        }
-    },
-
-    /** go through and remove all tiles from the grid, calling
-     *    destroy() on each of them to kill circular references
-     * 
-     * @private
-     */
-    clearGrid:function() {
-        if (this.grid) {
-            while(this.grid.length > 0) {
-                var row = this.grid[0];
-                while(row.length > 0) {
-                    var tile = row[0];
-                    tile.destroy();
-                    row.remove(tile);
-                }
-                this.grid.remove(row);                   
-            }
-        }
-    },
 
     /**
      * addTile gives subclasses of Grid the opportunity to create an 
@@ -296,6 +213,12 @@ OpenLayers.Layer.Grid.prototype =
     },
 
     
+  /********************************************************/
+  /*                                                      */
+  /*                 Baselayer Functions                  */
+  /*                                                      */
+  /********************************************************/
+  
     /** 
      * @returns Degrees per Pixel
      * @type float
@@ -335,6 +258,95 @@ OpenLayers.Layer.Grid.prototype =
         return zoom;
     },
 
+    /** go through and remove all tiles from the grid, calling
+     *    destroy() on each of them to kill circular references
+     * 
+     * @private
+     */
+    clearGrid:function() {
+        if (this.grid) {
+            while(this.grid.length > 0) {
+                var row = this.grid[0];
+                while(row.length > 0) {
+                    var tile = row[0];
+                    tile.destroy();
+                    row.remove(tile);
+                }
+                this.grid.remove(row);                   
+            }
+        }
+    },
+
+    /**
+     * @private 
+     * 
+     * @param {Boolean} prepend if true, prepend to beginning.
+     *                          if false, then append to end
+     */
+    insertRow:function(prepend) {
+        var modelRowIndex = (prepend) ? 0 : (this.grid.length - 1);
+        var modelRow = this.grid[modelRowIndex];
+
+        var newRow = new Array();
+
+        var resolution = this.map.getResolution();
+        var deltaY = (prepend) ? -this.tileSize.h : this.tileSize.h;
+        var deltaLat = resolution * -deltaY;
+
+        for (var i=0; i < modelRow.length; i++) {
+            var modelTile = modelRow[i];
+            var bounds = modelTile.bounds.copyOf();
+            var position = modelTile.position.copyOf();
+            bounds.bottom = bounds.bottom + deltaLat;
+            bounds.top = bounds.top + deltaLat;
+            position.y = position.y + deltaY;
+            var newTile = this.addTile(bounds, position);
+            newTile.draw(this.alpha);
+            newRow.append(newTile);
+        }
+        
+        if (newRow.length>0){
+            if (prepend) {
+                this.grid.prepend(newRow);
+            } else {
+                this.grid.append(newRow);
+            }
+        }       
+    },
+
+    /**
+     * @private
+     * 
+     * @param {Boolean} prepend if true, prepend to beginning.
+     *                          if false, then append to end
+     */
+    insertColumn:function(prepend) {
+        var modelCellIndex;
+        var deltaX = (prepend) ? -this.tileSize.w : this.tileSize.w;
+        var resolution = this.map.getResolution();
+        var deltaLon = resolution * deltaX;
+
+        for (var i=0; i<this.grid.length; i++) {
+            var row = this.grid[i];
+            modelTileIndex = (prepend) ? 0 : (row.length - 1);
+            var modelTile = row[modelTileIndex];
+            
+            var bounds = modelTile.bounds.copyOf();
+            var position = modelTile.position.copyOf();
+            bounds.left = bounds.left + deltaLon;
+            bounds.right = bounds.right + deltaLon;
+            position.x = position.x + deltaX;
+            var newTile = this.addTile(bounds, position);
+            newTile.draw(this.alpha);
+            
+            if (prepend) {
+                row = row.prepend(newTile);
+            } else {
+                row = row.append(newTile);
+            }
+        }
+    },
+
     /** @final @type String */
     CLASS_NAME: "OpenLayers.Layer.Grid"
 });