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[Testing] Add better dependency injection and error handling

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This commit is contained in:
David Hudson 2016-09-04 19:19:14 +09:00
parent a566265a72
commit 9bb647e275
3 changed files with 68 additions and 44 deletions
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13
platform/features/plot/bundle.js
View File

@ -92,7 +92,13 @@ define([
{
"key": "ExportImageService",
"implementation": ExportImageService,
"depends": []
"depends": [
"$q",
"$timeout",
"$log",
"EXPORT_IMAGE_TIMEOUT"
]
}
],
"constants": [
@ -101,6 +107,11 @@ define([
"value": 900000,
"priority": "fallback",
"comment": "Fifteen minutes."
},
{
"key": "EXPORT_IMAGE_TIMEOUT",
"value": 500,
"priority": "fallback"
}
],
"policies": [

6
platform/features/plot/src/PlotController.js
View File

@ -374,7 +374,7 @@ define(
PlotController.prototype.exportPDF = function () {
var self = this;
self.hideExportButtons = true;
self.ExportImageService.exportPDF(self.$element[0], "plot.pdf", function () {
self.ExportImageService.exportPDF(self.$element[0], "plot.pdf").finally(function () {
self.hideExportButtons = false;
});
};
@ -385,7 +385,7 @@ define(
PlotController.prototype.exportPNG = function () {
var self = this;
self.hideExportButtons = true;
self.ExportImageService.exportPNG(self.$element[0], "plot.png", function () {
self.ExportImageService.exportPNG(self.$element[0], "plot.png").finally(function () {
self.hideExportButtons = false;
});
};
@ -396,7 +396,7 @@ define(
PlotController.prototype.exportJPG = function () {
var self = this;
self.hideExportButtons = true;
self.ExportImageService.exportJPG(self.$element[0], "plot.jpg", function () {
self.ExportImageService.exportJPG(self.$element[0], "plot.jpg").finally(function () {
self.hideExportButtons = false;
});
};

93
platform/features/plot/src/services/ExportImageService.js
View File

@ -29,75 +29,88 @@ define(
"jsPDF",
"saveAs"
],
function (html2canvas, JsPdf, saveAs) {
function (
html2canvas,
JsPdf,
saveAs
) {
var self = this;
/**
* The export image service will export any HTML node to
* PDF, JPG, or PNG.
* @constructor
*/
function ExportImageService() {
function ExportImageService($q, $timeout, $log, EXPORT_IMAGE_TIMEOUT) {
self.$q = $q;
self.$timeout = $timeout;
self.$log = $log;
self.EXPORT_IMAGE_TIMEOUT = EXPORT_IMAGE_TIMEOUT;
}
/**
* Renders an HTML element into a base64 encoded image
* as a BLOB, PNG, or JPG.
* @param {node} element that will be converted to an image
* @param {function} callback for passing the resulting image
* @param {string} type of image to convert the element to
* @returns {string} the color, in #RRGGBB form
* @returns {promise}
*/
function renderElement(element, callback, type) {
type = type || "jpeg";
function renderElement(element, type) {
var defer = self.$q.defer(),
renderTimeout;
html2canvas(element, {
onrendered: function (canvas) {
switch (type.toLowerCase()) {
case "blob":
canvas.toBlob(callback);
break;
renderTimeout = self.$timeout(function() {
defer.reject("html2canvas timed out");
}, self.EXPORT_IMAGE_TIMEOUT);
case "png":
callback(canvas.toDataURL("image/png", 1.0));
break;
try {
html2canvas(element, {
onrendered: function (canvas) {
switch (type.toLowerCase()) {
case "blob":
canvas.toBlob(defer.resolve);
break;
default:
case "jpg":
case "jpeg":
callback(canvas.toDataURL("image/jpeg", 1.0));
break;
case "png":
defer.resolve(canvas.toDataURL("image/png", 1.0));
break;
default:
case "jpg":
case "jpeg":
defer.resolve(canvas.toDataURL("image/jpeg", 1.0));
break;
}
}
}
});
});
} catch(e) {
self.$log.warn("html2canvas failed with error: " + e);
defer.reject(e);
}
defer.promise.finally(renderTimeout.cancel);
return defer.promise;
}
ExportImageService.prototype.exportPDF = function (element, filename, callback) {
callback = typeof callback === "function" ? callback : function () {};
renderElement(element, function (img) {
ExportImageService.prototype.exportPDF = function (element, filename) {
return renderElement(element, "jpeg").then(function (img) {
var pdf = new JsPdf("l", "px", [element.offsetHeight, element.offsetWidth]);
pdf.addImage(img, "JPEG", 0, 0, element.offsetWidth, element.offsetHeight);
pdf.save(filename);
callback();
}, "jpeg");
});
};
ExportImageService.prototype.exportJPG = function (element, filename, callback) {
callback = typeof callback === "function" ? callback : function () {};
renderElement(element, function (img) {
ExportImageService.prototype.exportJPG = function (element, filename) {
return renderElement(element, "blob").then(function (img) {
saveAs(img, filename);
callback();
}, "blob");
});
};
ExportImageService.prototype.exportPNG = function (element, filename, callback) {
callback = typeof callback === "function" ? callback : function () {};
renderElement(element, function (img) {
ExportImageService.prototype.exportPNG = function (element, filename) {
return renderElement(element, "blob").then(function (img) {
saveAs(img, filename);
callback();
}, "blob");
});
};
return ExportImageService;