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// Enyo content used in a Sugar Activity
// Show bi-directionnal communication between Sugar and Enyo
enyo.kind({
name: "App",
classes: "onyx main-window",
components: [
// HTML5 logo and introduction text
{kind: "Image", classes: "logo", src: "images/html5-logo.jpg"},
{classes: "block-top", components: [
{content: "This is the HTML5 part of the activity.", classes:"hello-text"},
{content: "All content is handle by JavaScript code.", classes:"hello-line"}
]},
// Welcome message using buddy setup
{classes: "divider", content: "Environment"},
{components: [
{content: "Hello", classes: "hello-text"},
{name: "buddyName", content: "NAME", classes: "hello-text hello-buddy"},
{content: "!", classes: "hello-text"},
{content: "(colors and name come from Sugar)", classes: "hello-advice"}
]},
// Buttons to send basic messages
{classes: "divider", content: "Basic message"},
{kind: "onyx.Button", content: "Send string to Python", ontap: "buttonStringClicked"},
{kind: "onyx.Button", content: "Send object to Python", ontap: "buttonObjectClicked", classes: "spacer"},
{content: "(send a simple message with a string or an object)", classes: "hello-advice"},
// Counter affected by toolbar activity buttons
{classes: "divider", content: "Toolbar"},
{components: [
{content: "Page count:", classes: "hello-text"},
{name: "pageCount", classes: "hello-text hello-buddy"},
{content: "(use toolbar buttons to update page count)", classes: "hello-advice"}
]},
// Right part of the screen
{classes: "right-part", components: [
// Controls synchronized with matching Python controls
{classes: "divider", content: "Synchronized controls"},
{name: "checkbox", kind: "onyx.Checkbox", checked: true, onchange: "checkboxClicked"},
{content: "Checkbox", classes: "hello-text spacer"},
{components: [
{kind: "onyx.InputDecorator", components: [
{name: "sliderValue", kind: "onyx.Input", classes: "slider-text", onchange: "valueChanged"}
]},
{name: "sliderBar", kind: "onyx.Slider", classes: "slider-bar", onChange: "sliderChanged"}
]},
{content: "(click to update Python counterpart at the same time)", classes: "hello-advice"},
// Canvas area
{classes: "divider", content: "Canvas"},
{kind: "Canvas", name: "canvas", classes: "canvas-style", attributes: {width: 200, height: 200}},
{content: "(use Python buttons to move the turtle)", classes: "hello-advice"},
{kind: "Image", id: "liogo", src:"images/liogo.png", classes: "liogo-logo", onload: "initLiogo" }
]}
],
// Constructor
create: function() {
this.inherited(arguments);
// Init sugar interface
this.sugar = new Sugar();
// Connect to python events
this.sugar.connect("helloFromPY", function(args) {
// Displayed as JSON string to see structure
alert("JavaScript received "+JSON.stringify(args));
});
this.sugar.connect("buddy", enyo.bind(this, "buddyChanged"));
this.sugar.connect("home_clicked", enyo.bind(this, "upgradePageCount"));
this.sugar.connect("back_clicked", enyo.bind(this, "upgradePageCount"));
this.sugar.connect("forward_clicked", enyo.bind(this, "upgradePageCount"));
this.sugar.connect("py_slider_changed", enyo.bind(this, "pySliderChanged"));
this.sugar.connect("py_checkbox_changed", enyo.bind(this, "pyCheckboxChanged"));
this.sugar.connect("liogo_forward_clicked", enyo.bind(this, "bForward"));
this.sugar.connect("liogo_left_clicked", enyo.bind(this, "bLeft"));
this.sugar.connect("liogo_right_clicked", enyo.bind(this, "bRight"));
this.sugar.connect("liogo_clear_clicked", enyo.bind(this, "bClear"));
// Send a message to python
this.sugar.sendMessage("ready")
// Init synchronized control
this.$.sliderBar.setValue(50);
this.$.sliderValue.setValue(50);
this.$.pageCount.setContent(1);
// Just to see that console function stay usable
console.log("Unhandled console message");
},
// Python sent buddy setup
buddyChanged: function(args) {
// Redraw buddy context
this.$.buddyName.applyStyle("background-color", args.colors[1]);
this.$.buddyName.applyStyle("color", args.colors[0]);
this.$.buddyName.setContent(args.name);
},
// Create Liogo component when the turtle image is loaded
initLiogo: function() {
// Init mini Logo component
this.liogo = new Liogo({canvas: this.$.canvas, image: document.getElementById("liogo") });
this.liogo.draw();
},
// Send a simple string message to Python
buttonStringClicked: function() {
this.sugar.sendMessage("helloFromJS", "Hello Python !");
},
// Send a dummy JavaScript object to Python
buttonObjectClicked: function() {
var person = { name: "Lionel", version: 2.0, language: ["Python", "JavaScript"] };
person.modified = new Date();
this.sugar.sendMessage("helloFromJS", person);
},
// Checkbox clicked, signal the changed to the matching Python control
checkboxClicked: function() {
this.sugar.sendMessage("JScheckboxChanged", this.$.checkbox.getChecked());
},
// Handle Python message coming from toolbar
upgradePageCount: function(args) {
// Process toolbar button click
var currentValue = parseInt(this.$.pageCount.getContent());
switch(args)
{
case 1:
currentValue++;
break;
case -1:
currentValue--;
break;
case 0:
currentValue = 1;
break;
}
this.$.pageCount.setContent(currentValue);
// Change toolbar button sensitivity depending of current page
var back = "False";
var forward = "False";
if (currentValue == 1)
back = "True"
else if (currentValue == 10)
forward = "True"
this.sugar.sendMessage("disableBack", back);
this.sugar.sendMessage("disableForward", forward);
},
// Slider changed, change the value and send a message to matching Python control
sliderChanged: function(inSender, inEvent) {
var newvalue = parseInt(this.$.sliderBar.getValue());
this.$.sliderValue.setValue(newvalue);
this.sugar.sendMessage("JSsliderChanged", newvalue);
},
// Slider value changed, change the slider and send a message to matching Python control
valueChanged: function(inSender, inEvent) {
var newvalue = parseInt(this.$.sliderValue.getValue());
this.$.sliderBar.setValue(newvalue);
this.sugar.sendMessage("JSsliderChanged", newvalue);
},
// Python slider value has changed, update the matching JavaScript control
pySliderChanged: function(args) {
var newvalue = parseInt(args);
this.$.sliderBar.setValue(newvalue);
this.$.sliderValue.setValue(newvalue);
},
// Python checkbox value has changed, update the matching JavaScript control
pyCheckboxChanged: function(args) {
this.$.checkbox.setChecked(args);
},
// Python forward turtle button clicked, process it in the mini Logo component
bForward: function(args) {
this.liogo.forward(args);
this.liogo.draw();
},
// Python left turtle button clicked, process it in the mini Logo component
bLeft: function(args) {
this.liogo.left(args);
this.liogo.draw();
},
// Python right turtle button clicked, process it in the mini Logo component
bRight: function(args) {
this.liogo.right(args);
this.liogo.draw();
},
// Python clear turtle button clicked, process it in the mini Logo component
bClear: function() {
this.liogo.clear();
this.liogo.draw();
}
});
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