javascript 操作剪切板 ie firefox 兼容

来源：互联网发布：淘宝上显示新品怎么弄编辑：程序博客网时间：2024/06/10 14:32

/**********************************************************
复制maintext到贴切板
***********************************************************/
function setClipboard(maintext)
{
    if (window.clipboardData)
     {
        return (window.clipboardData.setData("Text", maintext));
     }
    else
     {
        if (window.netscape)
         {
            try{
             netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
            var clip = Components.classes["@mozilla.org/widget/clipboard;1"].createInstance(Components.interfaces.nsIClipboard);
            if (!clip)
             {
                return;
             }
            var trans = Components.classes["@mozilla.org/widget/transferable;1"].createInstance(Components.interfaces.nsITransferable);
            if (!trans)
             {
                return;
             }
             trans.addDataFlavor("text/unicode");
            var str = new Object();
            var len = new Object();
            var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);
            var copytext = maintext;
             str.data = copytext;
             trans.setTransferData("text/unicode", str, copytext.length * 2);
            var clipid = Components.interfaces.nsIClipboard;
            if (!clip)
             {
                return false;
             }
             clip.setData(trans, null, clipid.kGlobalClipboard);
            return true;
             }
            catch(e)
             {
                 alert("您的firefox安全限制限制您进行剪贴板操作，请打开'about:config'将signed.applets.codebase_principal_support'设置为true'之后重试，相对路径为firefox根目录/greprefs/all.js");
                return false;
             }
         }
     }
    return false;
}
/**********************************************************
粘贴剪切板的内容
***********************************************************/
function getClipboard()
{
    if (window.clipboardData)
     {
        return (window.clipboardData.getData('text'));
     }
    else
     {
        if (window.netscape)
         {
            try
             {
                 netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
                var clip = Components.classes["@mozilla.org/widget/clipboard;1"].createInstance(Components.interfaces.nsIClipboard);
                if (!clip)
                 {
                    return;
                 }
                var trans = Components.classes["@mozilla.org/widget/transferable;1"].createInstance(Components.interfaces.nsITransferable);
                if (!trans)
                 {
                    return;
                 }
                 trans.addDataFlavor("text/unicode");
                 clip.getData(trans, clip.kGlobalClipboard);
                var str = new Object();
                var len = new Object();
                 trans.getTransferData("text/unicode", str, len);
             }
            catch (e)
             {
                 alert("您的firefox安全限制限制您进行剪贴板操作，请打开'about:config'将signed.applets.codebase_principal_support'设置为true'之后重试，相对路径为firefox根目录/greprefs/all.js");
                return null;
             }
            if (str)
             {
                if (Components.interfaces.nsISupportsWString)
                 {
                     str = str.value.QueryInterface(Components.interfaces.nsISupportsWString);
                 }
                else
                 {
                    if (Components.interfaces.nsISupportsString)
                     {
                         str = str.value.QueryInterface(Components.interfaces.nsISupportsString);
                     }
                    else
                     {
                         str = null;
                     }
                 }
             }
            if (str)
             {
                return (str.data.substring(0, len.value / 2));
             }
         }
     }
    return null;
}