Move code to be merged into src/attic

src/ol/renderer/Composite.js

@@ -1,160 +0,0 @@
-goog.provide('ol.renderer.Composite');
-
-goog.require('ol.renderer.MapRenderer');
-goog.require('ol.renderer.LayerRenderer');
-goog.require('ol.layer.Layer');
-goog.require('ol.Loc');
-goog.require('goog.array');
-
-/**
- * @constructor
- * @param {!Element} container
- * @extends {ol.renderer.MapRenderer}
- */
-ol.renderer.Composite = function(container) {
-    
-    goog.base(this, container);
-    
-    /**
-     * @type {Array.<ol.renderer.LayerRenderer>}
-     * @private
-     */
-    this.renderers_ = [];
-    
-    var target = document.createElement("div");
-    target.className = "ol-renderer-composite";
-    target.style.position = "absolute";
-    target.style.height = "100%";
-    target.style.width = "100%";
-    container.appendChild(target);
-
-    /**
-     * @type Element
-     * @private
-     */
-    this.target_ = target;
-    
-};
-
-goog.inherits(ol.renderer.Composite, ol.renderer.MapRenderer);
-
-/**
- * @param {Array.<ol.layer.Layer>} layers
- * @param {ol.Loc} center
- * @param {number} resolution
- * @param {boolean} animate
- */
-ol.renderer.Composite.prototype.draw = function(layers, center, resolution, animate) {
-    // TODO: deal with layer order and removal
-    for (var i=0, ii=layers.length; i<ii; ++i) {
-        this.getOrCreateRenderer(layers[i], i).draw(center, resolution);
-    }
-    this.renderedCenter_ = center;
-    this.renderedResolution_ = resolution;
-};
-
-/**
- * @param {ol.layer.Layer} layer
- * @param {number} index
- */
-ol.renderer.Composite.prototype.getOrCreateRenderer = function(layer, index) {
-    var renderer = this.getRenderer(layer);
-    if (goog.isNull(renderer)) {
-        renderer = this.createRenderer(layer);
-        goog.array.insertAt(this.renderers_, renderer, index);
-    }
-    return renderer;
-};
-
-/**
- * @param {ol.layer.Layer} layer
- */
-ol.renderer.Composite.prototype.getRenderer = function(layer) {
-    function finder(candidate) {
-        return candidate.getLayer() === layer;
-    }
-    return goog.array.find(this.renderers_, finder);
-};
-
-/**
- * @param {ol.layer.Layer} layer
- */
-ol.renderer.Composite.prototype.createRenderer = function(layer) {
-    var Renderer = this.pickRendererType(layer);
-    goog.asserts.assert(Renderer, "No supported renderer for layer: " + layer);
-    return new Renderer(this.target_, layer);
-};
-
-/**
- * List of preferred renderer types.  Layer renderers have a getType method
- * that returns a string describing their type.  This list determines the 
- * preferences for picking a layer renderer.
- *
- * @type {Array.<string>}
- */
-ol.renderer.Composite.preferredRenderers = ["svg", "canvas", "vml"];
-
-/**
- * @param {ol.layer.Layer} layer
- * @returns {Function}
- */
-ol.renderer.Composite.prototype.pickRendererType = function(layer) {
-    // maps candidate renderer types to candidate renderers
-    var types = {};
-
-    function picker(Candidate) {
-        var supports = Candidate['isSupported']() && Candidate['canRender'](layer);
-        if (supports) {
-            types[Candidate['getType']()] = Candidate;
-        }
-        return supports;
-    }
-    var Candidates = goog.array.filter(ol.renderer.Composite.registry_, picker);
-    
-    // check to see if any preferred renderers are available
-    var preferences = ol.renderer.Composite.preferredRenderers;
-
-    var Renderer;
-    for (var i=0, ii=preferences.length; i<ii; ++i) {
-        Renderer = types[preferences[i]];
-        if (Renderer) {
-            break;
-        }
-    }
-    
-    // if we didn't find any of the preferred renderers, use the first
-    return Renderer || Candidates[0] || null;
-};
-
-/**
- * @type {Array.<Function>}
- * @private
- */
-ol.renderer.Composite.registry_ = [];
-
-/**
- * @param {Function} Renderer
- */
-ol.renderer.Composite.register = function(Renderer) {
-    ol.renderer.Composite.registry_.push(Renderer);
-};
-
-/**
- * return {string}
- */
-ol.renderer.Composite.getType = function() {
-    // TODO: revisit
-    return "composite";
-};
-
-/**
- * TODO: determine if there is a better way to register these renderers
- *
- * @export
- * @return {boolean}
- */
-ol.renderer.Composite.isSupported = function() {
-    return true;
-};
-
-ol.renderer.MapRenderer.register(ol.renderer.Composite);