1 files changed, 167 insertions, 0 deletions
diff --git a/lib/epub.js/src/managers/helpers/views.js b/lib/epub.js/src/managers/helpers/views.js
new file mode 100644
index 0000000..4368da2
--- /dev/null
+++ b/lib/epub.js/src/managers/helpers/views.js
@@ -0,0 +1,167 @@
+class Views {
+	constructor(container) {
+		this.container = container;
+		this._views = [];
+		this.length = 0;
+		this.hidden = false;
+	}
+
+	all() {
+		return this._views;
+	}
+
+	first() {
+		return this._views[0];
+	}
+
+	last() {
+		return this._views[this._views.length-1];
+	}
+
+	indexOf(view) {
+		return this._views.indexOf(view);
+	}
+
+	slice() {
+		return this._views.slice.apply(this._views, arguments);
+	}
+
+	get(i) {
+		return this._views[i];
+	}
+
+	append(view){
+		this._views.push(view);
+		if(this.container){
+			this.container.appendChild(view.element);
+		}
+		this.length++;
+		return view;
+	}
+
+	prepend(view){
+		this._views.unshift(view);
+		if(this.container){
+			this.container.insertBefore(view.element, this.container.firstChild);
+		}
+		this.length++;
+		return view;
+	}
+
+	insert(view, index) {
+		this._views.splice(index, 0, view);
+
+		if(this.container){
+			if(index < this.container.children.length){
+				this.container.insertBefore(view.element, this.container.children[index]);
+			} else {
+				this.container.appendChild(view.element);
+			}
+		}
+
+		this.length++;
+		return view;
+	}
+
+	remove(view) {
+		var index = this._views.indexOf(view);
+
+		if(index > -1) {
+			this._views.splice(index, 1);
+		}
+
+
+		this.destroy(view);
+
+		this.length--;
+	}
+
+	destroy(view) {
+		if(view.displayed){
+			view.destroy();
+		}
+		
+		if(this.container){
+			 this.container.removeChild(view.element);
+		}
+		view = null;
+	}
+
+	// Iterators
+
+	forEach() {
+		return this._views.forEach.apply(this._views, arguments);
+	}
+
+	clear(){
+		// Remove all views
+		var view;
+		var len = this.length;
+
+		if(!this.length) return;
+
+		for (var i = 0; i < len; i++) {
+			view = this._views[i];
+			this.destroy(view);
+		}
+
+		this._views = [];
+		this.length = 0;
+	}
+
+	find(section){
+
+		var view;
+		var len = this.length;
+
+		for (var i = 0; i < len; i++) {
+			view = this._views[i];
+			if(view.displayed && view.section.index == section.index) {
+				return view;
+			}
+		}
+
+	}
+
+	displayed(){
+		var displayed = [];
+		var view;
+		var len = this.length;
+
+		for (var i = 0; i < len; i++) {
+			view = this._views[i];
+			if(view.displayed){
+				displayed.push(view);
+			}
+		}
+		return displayed;
+	}
+
+	show(){
+		var view;
+		var len = this.length;
+
+		for (var i = 0; i < len; i++) {
+			view = this._views[i];
+			if(view.displayed){
+				view.show();
+			}
+		}
+		this.hidden = false;
+	}
+
+	hide(){
+		var view;
+		var len = this.length;
+
+		for (var i = 0; i < len; i++) {
+			view = this._views[i];
+			if(view.displayed){
+				view.hide();
+			}
+		}
+		this.hidden = true;
+	}
+}
+
+export default Views;