30af2c89df
- eliminates "unresponsive script" message on import/export i tried to make a progress bar that actually provides useful information, but for some reason, XUL interface updates are done asynchronously, and thus don't actually happen as long as the import/export operation continues. the code is there, but disabled, if there's some solution to this issue, but i searched and couldn't find one.
309 lines
10 KiB
JavaScript
309 lines
10 KiB
JavaScript
Scholar_File_Interface = new function() {
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var _unresponsiveScriptPreference;
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this.exportFile = exportFile;
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this.importFile = importFile;
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this.bibliographyFromProject = bibliographyFromProject;
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/*
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* Creates Scholar.Translate instance and shows file picker for file export
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*/
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function exportFile() {
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var translation = new Scholar.Translate("export");
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var translators = translation.getTranslators();
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const nsIFilePicker = Components.interfaces.nsIFilePicker;
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var fp = Components.classes["@mozilla.org/filepicker;1"]
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.createInstance(nsIFilePicker);
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fp.init(window, "Export", nsIFilePicker.modeSave);
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for(var i in translators) {
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fp.appendFilter(translators[i].label, translators[i].target);
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}
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var rv = fp.show();
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if (rv == nsIFilePicker.returnOK || rv == nsIFilePicker.returnReplace) {
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translation.setLocation(fp.file);
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translation.setTranslator(translators[fp.filterIndex]);
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//translation.setHandler("itemCount", _exportItemCount);
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//translation.setHandler("itemDone", _exportItemDone);
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translation.setHandler("done", _exportDone);
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_disableUnresponsive();
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Scholar_File_Interface.Progress.show(
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Scholar.getString("fileInterface.itemsExported"),
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function() {
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translation.translate();
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});
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}
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}
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/*
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* set progress indicator length
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*/
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function _exportItemCount(obj, number) {
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Scholar.debug("count called with "+number);
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Scholar_File_Interface.Progress.setNumber(number);
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}
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/*
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* Increment progress for each item exported
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*/
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function _exportItemDone(obj, item) {
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Scholar_File_Interface.Progress.increment();
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}
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/*
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* closes items exported indicator
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*/
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function _exportDone(obj) {
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Scholar_File_Interface.Progress.close();
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_restoreUnresponsive();
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}
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/*
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* Creates Scholar.Translate instance and shows file picker for file import
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*/
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function importFile() {
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var translation = new Scholar.Translate("import");
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var translators = translation.getTranslators();
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const nsIFilePicker = Components.interfaces.nsIFilePicker;
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var fp = Components.classes["@mozilla.org/filepicker;1"]
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.createInstance(nsIFilePicker);
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fp.init(window, "Import", nsIFilePicker.modeOpen);
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for(var i in translators) {
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fp.appendFilter(translators[i].label, "*."+translators[i].target);
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}
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var rv = fp.show();
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if (rv == nsIFilePicker.returnOK || rv == nsIFilePicker.returnReplace) {
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translation.setLocation(fp.file);
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// get translators again, bc now we can check against the file
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translators = translation.getTranslators();
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if(translators.length) {
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// TODO: display a list of available translators
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translation.setTranslator(translators[0]);
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// show progress indicator
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translation.setHandler("itemDone", _importItemDone);
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translation.setHandler("done", _importDone);
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_disableUnresponsive();
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Scholar_File_Interface.Progress.show(
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Scholar.getString("fileInterface.itemsImported"),
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function() {
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translation.translate();
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});
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}
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}
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}
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/*
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* Saves items after they've been imported. We could have a nice little
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* "items imported" indicator, too.
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*/
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function _importItemDone(obj, item) {
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//Scholar_File_Interface.Progress.increment();
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item.save();
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}
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/*
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* closes items imported indicator
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*/
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function _importDone(obj) {
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Scholar_File_Interface.Progress.close();
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_restoreUnresponsive();
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}
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/*
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* disables the "unresponsive script" warning; necessary for import and
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* export, which can take quite a while to execute
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*/
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function _disableUnresponsive() {
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var prefService = Components.classes["@mozilla.org/preferences-service;1"].
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getService(Components.interfaces.nsIPrefBranch);
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_unresponsiveScriptPreference = prefService.getIntPref("dom.max_script_run_time");
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prefService.setIntPref("dom.max_script_run_time", 0);
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}
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/*
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* restores the "unresponsive script" warning
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*/
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function _restoreUnresponsive() {
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var prefService = Components.classes["@mozilla.org/preferences-service;1"].
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getService(Components.interfaces.nsIPrefBranch);
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prefService.setIntPref("dom.max_script_run_time", _unresponsiveScriptPreference);
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}
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/*
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* Creates a bibliography
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*/
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function bibliographyFromProject() {
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var collection = ScholarPane.getSelectedCollection();
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if(!collection) throw("error in bibliographyFromProject: no collection currently selected");
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_doBibliographyOptions(Scholar.getItems(collection.getID()));
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}
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/*
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* Shows bibliography options and creates a bibliography
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*/
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function _doBibliographyOptions(items) {
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var io = new Object();
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var newDialog = window.openDialog("chrome://scholar/content/bibliography.xul",
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"_blank","chrome,modal,centerscreen", io);
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// generate bibliography
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var bibliography = Scholar.Cite.getBibliography(io.style, items);
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if(io.output == "print") {
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// printable bibliography, using a hidden browser
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var browser = Scholar.Browser.createHiddenBrowser(window);
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browser.contentDocument.write(bibliography);
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// this is kinda nasty, but we have to temporarily modify the user's
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// settings to eliminate the header and footer. the other way to do
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// this would be to attempt to print with an embedded browser, but
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// it's not even clear how to attempt to create one
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var prefService = Components.classes["@mozilla.org/preferences-service;1"].
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getService(Components.interfaces.nsIPrefBranch);
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var prefsToClear = ["print.print_headerleft", "print.print_headercenter",
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"print.print_headerright", "print.print_footerleft",
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"print.print_footercenter", "print.print_footerright"];
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var oldPrefs = new Array();
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for(var i in prefsToClear) {
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oldPrefs[i] = prefService.getCharPref(prefsToClear[i]);
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prefService.setCharPref(prefsToClear[i], "");
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}
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// print
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browser.contentWindow.print();
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// set the prefs back
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for(var i in prefsToClear) {
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prefService.setCharPref(prefsToClear[i], oldPrefs[i]);
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}
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Scholar.Browser.deleteHiddenBrowser(browser);
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bibliographyStream.close();
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} else if(io.output == "save-as-html") {
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// savable bibliography, using a file stream
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const nsIFilePicker = Components.interfaces.nsIFilePicker;
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var fp = Components.classes["@mozilla.org/filepicker;1"]
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.createInstance(nsIFilePicker);
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fp.init(window, "Save Bibliography", nsIFilePicker.modeSave);
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fp.appendFilters(nsIFilePicker.filterHTML);
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var rv = fp.show();
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if (rv == nsIFilePicker.returnOK || rv == nsIFilePicker.returnReplace) {
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// open file
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var fStream = Components.classes["@mozilla.org/network/file-output-stream;1"].
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createInstance(Components.interfaces.nsIFileOutputStream);
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fStream.init(fp.file, 0x02 | 0x08 | 0x20, 0664, 0); // write, create, truncate
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var html = "";
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html +='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">\n';
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html +='<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">\n';
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html +='<head>\n';
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html +='<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />\n';
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html +='<title>Bibliography</title>\n';
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html +='</head>\n';
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html +='<body>\n';
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html += bibliography;
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html +='</body>\n';
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html +='</html>\n';
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fStream.write(html, html.length);
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fStream.close();
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}
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} else if(io.output == "copy-to-clipboard") {
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// copy to clipboard
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var transferable = Components.classes["@mozilla.org/widget/transferable;1"].
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createInstance(Components.interfaces.nsITransferable);
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var str = Components.classes["@mozilla.org/supports-string;1"].
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createInstance(Components.interfaces.nsISupportsString);
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str.data = bibliography;
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// add data
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transferable.addDataFlavor("text/html");
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transferable.setTransferData("text/html", str, bibliography.length*2);
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var clipboardService = Components.classes["@mozilla.org/widget/clipboard;1"].
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getService(Components.interfaces.nsIClipboard);
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clipboardService.setData(transferable, null, Components.interfaces.nsIClipboard.kGlobalClipboard);
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}
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}
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}
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// Handles the display of a progress indicator
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Scholar_File_Interface.Progress = new function() {
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var _windowLoaded = false;
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var _windowLoading = false;
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var _progressWindow;
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// keep track of all of these things in case they're called before we're
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// done loading the progress window
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var _loadHeadline, _loadNumber, _outOf, _callback;
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this.show = show;
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//this.setNumber = setNumber;
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//this.increment = increment;
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this.close = close;
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function show(headline, callback) {
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if(_windowLoading || _windowLoaded) { // already loading or loaded
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return false;
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}
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_windowLoading = true;
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_loadHeadline = headline;
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_loadNumber = 0;
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_outOf = 0;
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_callback = callback;
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_progressWindow = window.openDialog("chrome://scholar/chrome/fileProgress.xul", "", "chrome,resizable=no,close=no,dependent,dialog,centerscreen");
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_progressWindow.addEventListener("pageshow", _onWindowLoaded, false);
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}
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/*function setNumber(number) {
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_outOf = number;
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if(_windowLoaded) {
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var progressMeter = _progressWindow.document.getElementById("progress-indicator");
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progressMeter.mode = "normal";
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progressMeter.value = "0%";
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}
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}
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function increment() {
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_loadNumber++;
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if(_windowLoaded) {
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_progressWindow.document.getElementById("progress-items").value = _loadNumber;
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if(_outOf) {
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_progressWindow.document.getElementById("progress-indicator").value = ((_loadNumber/_outOf)*100).toString()+"%";
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}
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_progressWindow.getSelection();
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}
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}*/
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function close() {
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_windowLoaded = false;
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try {
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_progressWindow.close();
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} catch(ex) {}
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}
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function _onWindowLoaded() {
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_windowLoading = false;
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_windowLoaded = true;
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// do things we delayed because the winodw was loading
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/*if(_outOf) {
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var progressMeter = _progressWindow.document.getElementById("progress-indicator");
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progressMeter.mode = "normal";
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progressMeter.value = ((_loadNumber/_outOf)*100).toString()+"%";
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}
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_progressWindow.document.getElementById("progress-items").value = _loadNumber;*/
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_progressWindow.document.getElementById("progress-label").value = _loadHeadline;
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if(_callback) {
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window.setTimeout(_callback, 1500);
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}
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}
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}
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