From ca3ad6305ec0655ad8475a12ac2228b61cdd9ba0 Mon Sep 17 00:00:00 2001
From: Lionel LASKE <llaske@c2s.fr>
Date: Sat, 25 Aug 2012 20:23:36 +0000
Subject: Init commit

---
(limited to 'html/lib/onyx/source/Popup.js')

diff --git a/html/lib/onyx/source/Popup.js b/html/lib/onyx/source/Popup.js
new file mode 100644
index 0000000..105431a
--- /dev/null
+++ b/html/lib/onyx/source/Popup.js
@@ -0,0 +1,87 @@
+/**
+	An enhanced popup with built-in scrim and z-index handling. To avoid
+	obscuring popup contents, scrims require the dialog to be floating;
+	otherwise, they won't render. Modal popups get a transparent scrim by
+	default, unless the modal popup isn't floating. To get a translucent scrim
+	when modal, specify _scrim: true, scrimWhenModal: false_.
+*/
+enyo.kind({
+	name: "onyx.Popup",
+	kind: "Popup",
+	classes: "onyx-popup",
+	published: {
+		/**
+			Determines whether a scrim will appear when the dialog is modal.
+			Note that modal scrims are transparent, so you won't see them.
+		*/
+		scrimWhenModal: true,
+		//* Determines whether or not to display a scrim. Only displays scrims
+		//* when floating.
+		scrim: false,
+		/**
+			Optional class name to apply to the scrim. Be aware that the scrim
+			is a singleton and you will be modifying the scrim instance used for
+			other popups.
+		*/
+		scrimClassName: ""
+	},
+	//* @protected
+	statics: { count: 0 },
+	defaultZ: 120,
+	showingChanged: function() {
+		if(this.showing) {
+			onyx.Popup.count++;
+			this.applyZIndex();
+		}
+		else {
+			if(onyx.Popup.count > 0) {
+				onyx.Popup.count--;
+			}
+		}
+		this.showHideScrim(this.showing);
+		this.inherited(arguments);
+	},
+	showHideScrim: function(inShow) {
+		if (this.floating && (this.scrim || (this.modal && this.scrimWhenModal))) {
+			var scrim = this.getScrim();
+			if (inShow) {
+				// move scrim to just under the popup to obscure rest of screen
+				var i = this.getScrimZIndex();
+				this._scrimZ = i;
+				scrim.showAtZIndex(i);
+			} else {
+				scrim.hideAtZIndex(this._scrimZ);
+			}
+			enyo.call(scrim, "addRemoveClass", [this.scrimClassName, scrim.showing]);
+		}
+	},
+	getScrimZIndex: function() {
+		// Position scrim directly below popup
+		return this.findZIndex()-1;
+	},
+	getScrim: function() {
+		// show a transparent scrim for modal popups if scrimWhenModal is true
+		// if scrim is true, then show a regular scrim.
+		if (this.modal && this.scrimWhenModal && !this.scrim) {
+			return onyx.scrimTransparent.make();
+		}
+		return onyx.scrim.make();
+	},
+	applyZIndex: function() {
+		// Adjust the zIndex so that popups will properly stack on each other.
+		this._zIndex = onyx.Popup.count * 2 + this.findZIndex() + 1;
+		// leave room for scrim
+		this.applyStyle("z-index", this._zIndex);
+	},
+	findZIndex: function() {
+		// a default z value
+		var z = this.defaultZ;
+		if (this._zIndex) {
+			z = this._zIndex;
+		} else if (this.hasNode()) {
+			// Re-use existing zIndex if it has one
+			z = Number(enyo.dom.getComputedStyleValue(this.node, "z-index")) || z;
+		}
+		return (this._zIndex = z);
+	}
+});
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