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front.js
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front.js
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/**
* Listens for initialization to load the window.
*/
chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
// Switch through the request types.
switch(request.type) {
// Initialize the site.
case "initialize":
App.initialize(sendResponse);
break;
case "words":
App.loadWords(request.words);
break;
}
});
/**
* Contains variables and functionality for the front end of the app.
*/
var App = {
/**
* Handles requests to generate a deck and passes it to the
* callback function.
*/
buildDeck: function(words) {
var fileParts = [];
// Iterate through words and add them to the deck.
for(var i in words) {
var word = words[i];
if (typeof this.words[word] != "undefined") {
// Expression.
filePart = word + "\t";
// Reading.
filePart += (this.words[word].kana || word) + "\t";
// Meaning.
filePart += this.words[word].definition + "\t";
// Site title.
filePart += window.document.title + "\t";
// Site url.
filePart += window.location.href;
fileParts.push(filePart + "\n");
}
}
return URL.createObjectURL(new Blob(fileParts, {type: "text/plain"}));
},
/**
* Handles the initialization functionality. Renders UI, collects
* text and sends it back to the backend of the application.
*/
initialize: function(callback) {
UI.render();
var text = [];
var selections = window.getSelection();
for(var i = 0; i < selections.rangeCount; i++) {
var div = document.createElement("div");
div.appendChild(selections.getRangeAt(i).cloneContents());
text.push(div.innerText);
}
callback(text);
},
/**
* Handles the response from the server, which has pulled the
* words that were matched.
*/
loadWords: function(words) {
// Keep a list of the current words specified.
this.words = words;
// Convert words into a format that will be
// UI friendly.
var wordList = [];
for(var word in words) {
wordList.push({
definition: words[word].definition,
kana: words[word].kana ? words[word].kana : word,
word: word
});
}
// Show them in the UI.
UI.showWords(wordList);
},
words: []
}