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devtools_import_export.js
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//### devtools_import_export.js
//
//### Developer Tools Import/Export Snippet for Google Chrome
//
//Source
//-------
//
//**Release** https://raw.github.com/bgrins/devtools-snippets/master/snippets/devtools_import_export.js
//
//**Development** https://raw.github.com/anaran/devtools-snippets/master/snippets/devtools_import_export.js
//
//Documentation
//-------
//
//**Release** http://bgrins.github.io/devtools-snippets/#devtools_import_export
//
//**Development** https://github.com/anaran/devtools-snippets/blob/devtools_import_export/snippets/devtools_import_export/README.md
//
//### Features
//
//- Export Chrome Developer Tools Source Snippets
//
// - All into Single JSON File
// - Individual Source Code Files
//
//- Import Source Snippets into Chrome Developer Tools
//
// - Select Multiple Files in Dialog Box
// - Drop Multiple Files
//
// - Import Source Files
// - Import Previous Export File
// - Import devtools-snippets JSON File from http://bgrins.github.io/devtools-snippets/snippets.json
//
//Implementation by [anaran](https://github.com/anaran).
(function() {
try {
function getDownloadFileName(count) {
var abbrevCount;
var d = new Date();
var fileName = 'chrome-snippets-' + count + '-'; //$NON-NLS-0$
fileName += d.getFullYear();
var month = d.getMonth() + 1;
fileName += "-" + ((month < 10) ? "0" + month : month); //$NON-NLS-0$ //$NON-NLS-1$
// TODO Please note getDay() returns the day of week,
// see http://www.ecma-international.org/ecma-262/5.1/#sec-15.9.5.16
var day = d.getDate();
fileName += "-" + ((day < 10) ? "0" + day : day); //$NON-NLS-0$ //$NON-NLS-1$
var hours = d.getHours();
fileName += "T" + ((hours < 10) ? "0" + hours : hours); //$NON-NLS-0$ //$NON-NLS-1$
var minutes = d.getMinutes();
fileName += ((minutes < 10) ? "0" + minutes : minutes); //$NON-NLS-0$
var seconds = d.getSeconds();
fileName += ((seconds < 10) ? "0" + seconds : seconds); //$NON-NLS-0$
var timeZoneOffset = -d.getTimezoneOffset();
var offsetMinutes = timeZoneOffset % 60;
var offsetHours = (timeZoneOffset - offsetMinutes) / 60;
// TODO FIXME >= 0 ?
fileName += (offsetHours > 0 ? "+" : "") + ((offsetHours < 10) ? "0" + offsetHours : offsetHours) + ((offsetMinutes < 10) ? "0" + offsetMinutes : offsetMinutes); //$NON-NLS-0$ //$NON-NLS-2$ //$NON-NLS-1$
fileName += '.json'; //$NON-NLS-0$
return fileName;
}
var title = 'DevTools Import/Export';
var cancel = 'Cancel';
var alertAndWarn = function(message) {
window.alert(message + "\n----\nSee JavaScript console for the complete log of warnings");
console.warn(message);
}
var alertAndError = function(message) {
window.alert(message + "\n----\nSee JavaScript console for the complete log of errors");
console.error(message);
}
var div = document.createElement('div');
var devtoolsImportExport = function() {
try {
var w = window.open("", "");
w.document.title = title;
w.document.body.appendChild(document.createElement('div').appendChild(div).parentElement);
var aClose = document.createElement('a');
aClose.innerHTML = 'Close here (<strong>[ x ]</strong> crashes canary)';
aClose.href = '';
var closeDiv = document.createElement('div');
closeDiv.appendChild(aClose);
closeDiv.setAttribute('style', 'position:fixed; top: 0; right: 0; padding: 1em;');
w.document.body.appendChild(closeDiv);
aClose.addEventListener('click', function(event) {
event.preventDefault();
event.view.close();
}, false);
if (location.origin === "chrome-devtools://devtools") {
var importSnippets = document.createElement('input');
importSnippets.type = 'file';
importSnippets.title = 'Select (or drop) one (or more) export (or source) files here for import.';
importSnippets.multiple = true;
importSnippets.setAttribute('style', 'border: 0.2em dashed silver');
div.appendChild(document.createElement('div').appendChild(document.createTextNode('Import Snippets individually or from exported localStorage.')).parentElement);
div.appendChild(importSnippets);
var reviewImports = document.createElement('input');
reviewImports.id = "reviewImports";
// reviewImports.name = "reviewImports";
reviewImports.type = "checkbox";
reviewImports.title = "Review each imported snippet in popup window.";
// TODO Please note that closing a review window curretly crashes canary.
// See https://code.google.com/p/chromium/issues/detail?id=323031
reviewImports.checked = false;
var reviewImportsLabel = document.createElement('label');
reviewImportsLabel.
for = "reviewImports";
// TODO Remove once https://code.google.com/p/chromium/issues/detail?id=323031 gets fixed.
reviewImportsLabel.innerText = "review (crashes canary)";
div.appendChild(reviewImportsLabel);
div.appendChild(reviewImports);
var conflictDiv = div.appendChild(document.createElement('div'));
conflictDiv.appendChild(document.createTextNode('What if snippets by those names exist in devtools?'));
var conflictSelect = document.createElement('select');
conflictSelect.multiple = false;
var overwrite = document.createElement('option');
var rename = document.createElement('option');
overwrite.innerText = "Import overwrites existing content";
rename.innerText = "Rename imported content";
overwrite.title = "The existing snippet's ID is used, its content replaced.";
rename.title = "The ID of the newly created snippet is included in its name.";
conflictSelect.appendChild(rename);
conflictSelect.appendChild(overwrite);
conflictDiv.appendChild(conflictSelect);
conflictSelect.value = rename.innerText;
div.appendChild(document.createElement('hr'));
var aDownloadAsk = document.createElement('a');
aDownloadAsk.href = 'https://support.google.com/chrome/answer/95574?hl=' + navigator.language;
aDownloadAsk.target = 'dtie_afd';
aDownloadAsk.innerText = 'ask for download location';
var aDownloadAskDiv = document.createElement('div');
div.appendChild(aDownloadAskDiv);
aDownloadAskDiv.appendChild(document.createTextNode('You may set Google Chrome to '));
aDownloadAskDiv.appendChild(aDownloadAsk);
aDownloadAskDiv.appendChild(document.createTextNode(' to avoid malware warning (still requires confirming each download).'));
aDownloadAskDiv.addEventListener('click', function(event) {
event.preventDefault();
window.open(aDownloadAsk.href, aDownloadAsk.target);
}, false);
var exportButton = document.createElement('input');
exportButton.type = 'button';
exportButton.value = 'Export All Snippets';
var exportSnippets = function(individually) {
var aNodeList = w.document.querySelectorAll('a[download]');
if (individually) {
for (var i = 0, len = aNodeList.length; i < len; i++) {
aNodeList[i].click();
}
} else {
var localStorageBlob = new window.Blob([JSON.stringify({
'snippets': JSON.parse(localStorage.scriptSnippets)
// TODO Please note order of keys -- first serializing name, then content.
}, ['snippets', 'name', 'content'], 2)], {
'type': 'text/utf-8'
});
var a = document.createElement('a');
a.href = URL.createObjectURL(localStorageBlob);
var snippets = JSON.parse(localStorage.scriptSnippets);
a.download = getDownloadFileName(snippets.length);
a.click();
}
}
exportButton.addEventListener('click', function(event) {
if (exportTypeSelect.value === individualFiles.innerText) {
exportSnippets( !! "individually");
} else {
exportSnippets(!"individually");
}
}, false);
var exportDiv = document.createElement('div');
div.appendChild(exportDiv.appendChild(exportButton).parentElement);
// exportTypeSelect
var exportTypeSelect = document.createElement('select');
exportTypeSelect.multiple = false;
exportTypeSelect.addEventListener('change', function(event) {
if (exportTypeSelect.value === individualFiles.innerText) {
missingFileTypeExtensionSelect.hidden = false;
// missingFileTypeExtensionSelect.disabled = false;
} else {
missingFileTypeExtensionSelect.hidden = true;
// missingFileTypeExtensionSelect.disabled = true;
}
}, false);
var singleFile = document.createElement('option');
var individualFiles = document.createElement('option');
singleFile.innerText = "All into single JSON file";
individualFiles.innerText = "Individual source code files";
singleFile.title = "All snippets are first saved into a single timestamped JSON file\n(e. g. " + getDownloadFileName('COUNT') + ')';
individualFiles.title = "Each snippet source code is saved by its name, adding a missing file type extension.";
exportTypeSelect.appendChild(individualFiles);
exportTypeSelect.appendChild(singleFile);
exportDiv.appendChild(exportTypeSelect);
exportTypeSelect.value = singleFile.innerText;
// missingFileTypeExtensionSelect
var missingFileTypeExtensionSelect = document.createElement('select');
var textFile = document.createElement('option');
var javaScriptFile = document.createElement('option');
// Documented in https://developer.mozilla.org/en-US/docs/Web/API/HTMLSelectElement
textFile.value = ".txt";
javaScriptFile.value = ".js";
// Displayed in the meu
textFile.innerText = ".txt";
javaScriptFile.innerText = ".js";
textFile.title = "Extension is only added when snippet name has none (causes no malware warning).";
javaScriptFile.title = "Extension is only added when snippet name has none (causes malware warning).";
missingFileTypeExtensionSelect.appendChild(javaScriptFile);
missingFileTypeExtensionSelect.appendChild(textFile);
exportDiv.appendChild(missingFileTypeExtensionSelect);
missingFileTypeExtensionSelect.value = javaScriptFile.innerText;
missingFileTypeExtensionSelect.multiple = false;
missingFileTypeExtensionSelect.hidden = true;
// deleteButton
var deleteButton = document.createElement('input');
deleteButton.type = 'button';
deleteButton.title = singleFile.title;
deleteButton.value = 'Delete All Snippets';
deleteButton.addEventListener('click', function(event) {
exportSnippets(!"individually");
if (window.confirm("I have verified localStorage download completed successfully and would like to delete all snippets from Chrome now.\n\n(This cannot be undone when localStorage data has not been downloaded.)")) {
localStorage.scriptSnippets = "";
}
}, false);
div.appendChild(document.createElement('div').appendChild(deleteButton).parentElement);
var snippetLinks = document.createElement('div');
div.appendChild(document.createElement('div').appendChild(document.createTextNode('Export Snippets Individually')).parentElement);
div.appendChild(snippetLinks);
var checkFileCount = function(files) {
if (files.length === 0) {
alertAndWarn('Please pick some .js files for import as google chrome devtools snippets.');
return false;
} else {
return true;
}
};
function createSnippetUpdateLastId(scriptSnippetsParsed, snippetArrayIndexByName, fileName, result, review, overwrite) {
function newSnippet(rename) {
var newID = Number(localStorage.scriptSnippets_lastIdentifier) + 1;
localStorage.scriptSnippets_lastIdentifier = JSON.stringify(newID);
scriptSnippetsParsed.push({
id: newID,
name: rename ? (fileName.replace(/^(.+?)(\.[a-z]+)?$/, '$1_' + newID + '$2')) : fileName,
content: result
});
}
if (review) {
var w = window.open("", "", "width=" + window.screen.availWidth / 2 + ",height=" + window.screen.availHeight / 2 + ",top=100,left=100");
w.document.title = 'Snippet ' + fileName;
var pre = document.createElement('pre');
pre.innerText = result;
w.document.body.appendChild(pre);
}
var snippetArrayIndex = snippetArrayIndexByName[fileName];
if (snippetArrayIndex) {
if (overwrite) {
scriptSnippetsParsed[snippetArrayIndex].content = result;
} else {
newSnippet( !! 'rename');
}
} else {
newSnippet(!'rename');
}
}
function readFileUpdateUI(file) {
var reader = new FileReader();
var filesLoaded = 0;
var scriptSnippetsParsed = localStorage.scriptSnippets.length ? JSON.parse(localStorage.scriptSnippets) : [];
var snippetArrayIndexByName = {};
var overwriteExisting = (conflictSelect.value === overwrite.innerText);
scriptSnippetsParsed.forEach(function(value, index) {
snippetArrayIndexByName[value.name] = index;
});
reader.onerror = errorHandler;
reader.onabort = errorHandler;
reader.onload = function(readEvent) {
filesLoaded++;
console.timeEnd('read of ' + file.name);
var result = readEvent.target.result;
try {
var scriptImportSnippets, parsedResult = JSON.parse(result);
// TODO Set to false to provoke error on snippets import for testing.
if (true) {
if (parsedResult.hasOwnProperty('snippets')) {
scriptImportSnippets = parsedResult.snippets;
}
}
if (parsedResult.hasOwnProperty('scriptSnippets')) {
scriptImportSnippets = JSON.parse(parsedResult.scriptSnippets);
}
scriptImportSnippets.forEach(function(snippet) {
createSnippetUpdateLastId(scriptSnippetsParsed, snippetArrayIndexByName, snippet.name, snippet.content, reviewImports.checked, overwriteExisting);
});
localStorage.scriptSnippets = JSON.stringify(scriptSnippetsParsed);
} catch (exception) {
if (parsedResult) {
alertAndWarn(file.name + ' is parsable, but invalid, JSON.\nIt will be loaded as source code for your review.' + '\n\nIt should instead contain\n{"snippets":\n[{"name": "...", "content": "..."}, ...]}' + '\n\nor alternatively\n{"scriptSnippets":\n"[{\\"name\\": \\"...\\", \\"content\\": \\"...\\"}, ...]"}' + '\n\nInstead it starts with ' + result.substring(0, 40));
}
createSnippetUpdateLastId(scriptSnippetsParsed, snippetArrayIndexByName, file.name, result, reviewImports.checked, overwriteExisting);
localStorage.scriptSnippets = JSON.stringify(scriptSnippetsParsed);
}
};
console.time('read of ' + file.name);
reader.readAsText(file);
}
importSnippets.addEventListener('change', function(event) {
// console.log(event.target.files);
if (checkFileCount(event.target.files)) {
// TODO files are added to head of the list, so we have to process in reverse order.
// console.log("Importing snippet files, please wait...");
for (var i = 0, len = event.target.files.length; i < len; i++) {
// TODO Please note this is asychronous and does not block!
readFileUpdateUI(event.target.files[i]);
}
}
// TODO this kills an in-progress read!
// window.close();
// w.setInterval(refreshSnippetDisplay, 3000);
// if (w.confirm('Please confirm to close ' + title + ' now.\n\ndevtools will also be closed to avoid stale snippet information.\n\n')) {
// w.location.reload(true);
// window.location.reload(true);
// w.close();
// window.close();
// }
}, false);
function errorHandler(domError) {
console.log(domError);
alertAndWarn(JSON.stringify(domError, function(key, value) {
if (key && value instanceof Object) {
return value.toString();
} else {
return value;
}
}));
}
var handleDrop = function(file) { //$NON-NLS-0$
readFileUpdateUI(file);
};
w.document.body.addEventListener("dragover", function(event) { //$NON-NLS-0$
event.preventDefault();
if ((event.srcElement === importSnippets)) {
event.dataTransfer.effectAllowed = "copy"; //$NON-NLS-0$
event.dataTransfer.dropEffect = "copy"; //$NON-NLS-0$
w.document.body.classList.add('valid');
console.log(event.dataTransfer.effectAllowed, event.dataTransfer.dropEffect);
} else {
event.dataTransfer.effectAllowed = "none"; //$NON-NLS-0$
event.dataTransfer.dropEffect = "none"; //$NON-NLS-0$
w.document.body.classList.remove('valid');
console.log(event.dataTransfer.effectAllowed, event.dataTransfer.dropEffect);
}
return false;
}, false && "useCapture"); //$NON-NLS-0$ //$NON-NLS-1$
w.document.body.addEventListener("dragstart", function(event) {
// TODO needed for drop to work!
event.preventDefault(); // stops the browser from redirecting.
}, false);
div.addEventListener("drop", function(event) {
// TODO needed for drop to work!
event.preventDefault(); // stops the browser from redirecting.
if (checkFileCount(event.dataTransfer.files)) {
// TODO files are added to head of the list, so we have to process in reverse order.
filesLoaded = 0;
console.log("Loading files, please wait...");
for (var i = 0, len = event.dataTransfer.files.length; i < len; i++) {
handleDrop(event.dataTransfer.files[i]);
}
w.document.body.classList.remove('valid');
}
}, false && "useCapture"); //$NON-NLS-0$ //$NON-NLS-1$
}
var refreshSnippetDisplay = function() {
if (location.origin === "chrome-devtools://devtools") {
var nds = snippetLinks.querySelectorAll('div');
for (var i = 0, len = nds.length; i < len; i++) {
snippetLinks.removeChild(nds[i]);
}
var snippets = localStorage.scriptSnippets.length ? JSON.parse(localStorage.scriptSnippets) : [];
snippets.forEach(function(snippet) {
var blob = new window.Blob(['// snippet ' + snippet.name + ' exported by devtools_import_export.js from\n// ' + navigator.userAgent + '\n// at ' + Date() + '\n' + snippet.content], {
'type': 'text/utf-8'
});
var a = document.createElement('a');
a.href = URL.createObjectURL(blob);
if (snippet.name.match(/\.[a-z]+$/i) || missingFileTypeExtensionSelect.hidden) {
a.download = snippet.name;
} else {
a.download = snippet.name + missingFileTypeExtensionSelect.value;
}
a.innerText = a.download;
snippetLinks.appendChild(document.createElement('div').appendChild(a).parentElement);
});
deleteButton.value = 'Delete All ' + snippets.length + ' Snippets';
exportButton.value = 'Export All ' + snippets.length + ' Snippets';
}
};
refreshSnippetDisplay();
w.setInterval(refreshSnippetDisplay, 3000);
} catch (exception) {
alertAndWarn(exception.stack.replace(/:(\d+):(\d+)/g, "$& (Line $1, Column $2)"));
}
}
if (location.origin === "chrome-devtools://devtools") {
devtoolsImportExport();
} else {
window.alert('To import/export devtools source snippets:\n\n* Undock Developer Tools into separate window\n* Press Ctrl+Shift+I to inspect it.\n* Run this snippet from there.');
}
} catch (exception) {
alertAndWarn(exception.stack.replace(/:(\d+):(\d+)/g, "$& (Line $1, Column $2)"));
}
})();