EasyDrag.uc.js

// ==UserScript==
// @name               EasyDrag.uc.js
// @namespace          EasyDrag@gmail.com
// @description        从紫大博客定制,修复了拖拽链接的一个小bug
// ==/UserScript==
location == "chrome://browser/content/browser.xul" && (function(event) {
	var self = arguments.callee;
	if (!event) {
		["dragstart", "dragover", "drop"].forEach(function(type) {
			gBrowser.mPanelContainer.addEventListener(type, self, false);
		});
		window.addEventListener("unload", function() {
			["dragstart", "dragover", "drop"].forEach(function(type) {
				gBrowser.mPanelContainer.removeEventListener(type, self, false);
			});
		}, false);
		return;
	}
	switch (event.type) {
	case "dragstart":
		{
			self.startPoint = [event.screenX, event.screenY];
			self.sourceNode = event.target;
			event.target.localName == "img" && event.dataTransfer.setData("application/x-moz-file-promise-url", event.target.src);
			break;
		}
	case "dragover":
		{
			self.startPoint && (Components.classes["@mozilla.org/widget/dragservice;1"].getService(Components.interfaces.nsIDragService).getCurrentSession().canDrop = true);
			break;
		}
	case "drop":
		{
			if (self.startPoint && event.target.localName != "textarea" && (!(event.target.localName == "input" && (event.target.type == "text" || event.target.type == "password"))) && event.target.contentEditable != "true") {
				event.preventDefault();
				event.stopPropagation();
				var [subX, subY] = [event.screenX - self.startPoint[0], event.screenY - self.startPoint[1]];
				var [distX, distY] = [(subX > 0 ? subX : (-subX)), (subY > 0 ? subY : (-subY))];
				var direction;
				if (distX > distY) direction = subX < 0 ? "L" : "R";
				else direction = subY < 0 ? "U" : "D";
				if (event.dataTransfer.types.contains("application/x-moz-file-promise-url")) {
					var edgimg = event.dataTransfer.getData("application/x-moz-file-promise-url");//目标图片链接
					if (direction == "U") {
						//新标签打开图片(前台)
						gBrowser.selectedTab = gBrowser.addTab(edgimg);
						return;
					}
					if (direction == "D") {
						//搜索相似图片(Google)
						gBrowser.addTab('http://www.google.com/searchbyimage?image_url=' + encodeURIComponent(edgimg));
						return;
					}
					if (direction == "L") {
						//复制图片地址
						Components.classes['@mozilla.org/widget/clipboardhelper;1'].createInstance(Components.interfaces.nsIClipboardHelper).copyString(edgimg);
						return;
					}
					/* if (direction == "R") {
						//下载图片(自己设置默认路径)
						var path = "E:\\Pictures";
						var uri = Components.classes["@mozilla.org/network/io-service;1"].getService(Components.interfaces.nsIIOService).newURI(edgimg, null, null)
						var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
						file.initWithPath(path);
						file.append(getDefaultFileName(null, uri));
						internalSave(null, null, null, null, null, null, null, {
							file: file,
							uri: uri
						}, null, internalSave.length === 12 ? document : true, internalSave.length === 12 ? true : null, null);
						return;
					} */
					if (direction == "R") {
						//下载图片(不弹窗)
						saveImageURL(edgimg, null, null, null, true, null, document);
						return;
					}
				} else if (event.dataTransfer.types.contains("text/x-moz-url")) {
					var edglink = event.dataTransfer.getData("text/x-moz-url").replace(/[\n\r]+/, "\n").split("\n");//目标链接
					if (direction == "U") {
						//新标签打开链接(后台)
						gBrowser.addTab(edglink[0]);
						return;
					}
					if (direction == "D") {
						//新标签打开链接(前台)
						gBrowser.selectedTab = gBrowser.addTab(edglink[0]);
						return;
					}
					if (direction == "L") {
						//复制链接文字
						Components.classes['@mozilla.org/widget/clipboardhelper;1'].createInstance(Components.interfaces.nsIClipboardHelper).copyString(edglink[0]);
						return;
					}
					if (direction == "R") {
						//复制链接+文字
						Components.classes['@mozilla.org/widget/clipboardhelper;1'].createInstance(Components.interfaces.nsIClipboardHelper).copyString(edglink[1] + '\n' + edglink[0]);
						return;
					}
				} else {
					var edgsel = event.dataTransfer.getData("text/unicode");//选中的文字
					if (direction == "U") {
						//Google搜索选中文字(站内\前台)
						gBrowser.selectedTab = gBrowser.addTab('http://www.google.com/search?q=' + "site:" + content.location.host + " " + encodeURIComponent(edgsel));
						return;
					}
					if (direction == "D") {
						//搜索框搜索选中文字(前台)
						gBrowser.selectedTab = gBrowser.addTab();
						BrowserSearch.loadSearch(edgsel, false);
						return;
					}
					if (direction == "L") {
						//Google翻译文本
						gTranslator.selectionTranslation();
						return;
					}
					if (direction == "R") {
						//高亮显示
						gWHT.highlightWord();
						return;
					}
				}
				self.startPoint = 0;
			}
		}
	}
})()