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  • LL(8) and left-recursion

    - by Peregring-lk
    I want to understand the relation between LL/LR grammars and the left-recursion problem (for any question I know parcially the answer, but I ask them as I don't know nothing, because I am a little confused now, and prefer complete answers) I'm happy with sintetized or short and direct answers (or just links solving it unambiguously): What type of language isn't LL(8) languages? LL(K) and LL(8) have problems with left-recursion? Or only LL(k) parsers? LALR(1) parser have troubles with left or right recursion? What type of troubles? Only in terms of the LL/LALR comparision. What is better, Bison (LALR(1)) or Boost.Spirit (LL(8))? (Let's suppose other features of them are irrelevant in this question) Why GCC use a (hand-made) LL(8) parser? Only for the "handling-error" problem?

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  • Help understand GLSL directional light on iOS (left handed coord system)

    - by Robse
    I now have changed from GLKBaseEffect to a own shader implementation. I have a shader management, which compiles and applies a shader to the right time and does some shader setup like lights. Please have a look at my vertex shader code. Now, light direction should be provided in eye space, but I think there is something I don't get right. After I setup my view with camera I save a lightMatrix to transform the light from global space to eye space. My modelview and projection setup: - (void)setupViewWithWidth:(int)width height:(int)height camera:(N3DCamera *)aCamera { aCamera.aspect = (float)width / (float)height; float aspect = aCamera.aspect; float far = aCamera.far; float near = aCamera.near; float vFOV = aCamera.fieldOfView; float top = near * tanf(M_PI * vFOV / 360.0f); float bottom = -top; float right = aspect * top; float left = -right; // projection GLKMatrixStackLoadMatrix4(projectionStack, GLKMatrix4MakeFrustum(left, right, bottom, top, near, far)); // identity modelview GLKMatrixStackLoadMatrix4(modelviewStack, GLKMatrix4Identity); // switch to left handed coord system (forward = z+) GLKMatrixStackMultiplyMatrix4(modelviewStack, GLKMatrix4MakeScale(1, 1, -1)); // transform camera GLKMatrixStackMultiplyMatrix4(modelviewStack, GLKMatrix4MakeWithMatrix3(GLKMatrix3Transpose(aCamera.orientation))); GLKMatrixStackTranslate(modelviewStack, -aCamera.position.x, -aCamera.position.y, -aCamera.position.z); } - (GLKMatrix4)modelviewMatrix { return GLKMatrixStackGetMatrix4(modelviewStack); } - (GLKMatrix4)projectionMatrix { return GLKMatrixStackGetMatrix4(projectionStack); } - (GLKMatrix4)modelviewProjectionMatrix { return GLKMatrix4Multiply([self projectionMatrix], [self modelviewMatrix]); } - (GLKMatrix3)normalMatrix { return GLKMatrix3InvertAndTranspose(GLKMatrix4GetMatrix3([self modelviewProjectionMatrix]), NULL); } After that, I save the lightMatrix like this: [self.renderer setupViewWithWidth:view.drawableWidth height:view.drawableHeight camera:self.camera]; self.lightMatrix = [self.renderer modelviewProjectionMatrix]; And just before I render a 3d entity of the scene graph, I setup the light config for its shader with the lightMatrix like this: - (N3DLight)transformedLight:(N3DLight)light transformation:(GLKMatrix4)matrix { N3DLight transformedLight = N3DLightMakeDisabled(); if (N3DLightIsDirectional(light)) { GLKVector3 direction = GLKVector3MakeWithArray(GLKMatrix4MultiplyVector4(matrix, light.position).v); direction = GLKVector3Negate(direction); // HACK -> TODO: get lightMatrix right! transformedLight = N3DLightMakeDirectional(direction, light.diffuse, light.specular); } else { ... } return transformedLight; } You see the line, where I negate the direction!? I can't explain why I need to do that, but if I do, the lights are correct as far as I can tell. Please help me, to get rid of the hack. I'am scared that this has something to do, with my switch to left handed coord system. My vertex shader looks like this: attribute highp vec4 inPosition; attribute lowp vec4 inNormal; ... uniform highp mat4 MVP; uniform highp mat4 MV; uniform lowp mat3 N; uniform lowp vec4 constantColor; uniform lowp vec4 ambient; uniform lowp vec4 light0Position; uniform lowp vec4 light0Diffuse; uniform lowp vec4 light0Specular; varying lowp vec4 vColor; varying lowp vec3 vTexCoord0; vec4 calcDirectional(vec3 dir, vec4 diffuse, vec4 specular, vec3 normal) { float NdotL = max(dot(normal, dir), 0.0); return NdotL * diffuse; } ... vec4 calcLight(vec4 pos, vec4 diffuse, vec4 specular, vec3 normal) { if (pos.w == 0.0) { // Directional Light return calcDirectional(normalize(pos.xyz), diffuse, specular, normal); } else { ... } } void main(void) { // position highp vec4 position = MVP * inPosition; gl_Position = position; // normal lowp vec3 normal = inNormal.xyz / inNormal.w; normal = N * normal; normal = normalize(normal); // colors vColor = constantColor * ambient; // add lights vColor += calcLight(light0Position, light0Diffuse, light0Specular, normal); ... }

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  • insert/update/delete with xml in .net 3.5

    - by Radhi
    Hello guys, i have "UserProfile" in my site which we have stored in xml fromat of xml is as below <UserProfile xmlns=""> <BasicInfo> <Title value="Basic Details" /> <Fields> <UserId title="UserId" display="No" right="Public" value="12" /> <EmailAddress title="Email Address" display="Yes" right="Public" value="[email protected]" /> <FirstName title="First Name" display="Yes" right="Public" value="Radhi" /> <LastName title="Last Name" display="Yes" right="Public" value="Patel" /> <DisplayName title="Display Name" display="Yes" right="Public" value="Radhi Patel" /> <RegistrationStatusId title="RegistrationStatusId" display="No" right="Public" value="10" /> <RegistrationStatus title="Registration Status" display="Yes" right="Private" value="Registered" /> <CountryName title="Country" display="Yes" right="Public" value="India" /> <StateName title="State" display="Yes" right="Public" value="Maharashtra" /> <CityName title="City" display="Yes" right="Public" value="Mumbai" /> <Gender title="Gender" display="Yes" right="Public" value="FeMale" /> <CreatedBy title="CreatedBy" display="No" right="Public" value="0" /> <CreatedOn title="CreatedOn" display="No" right="Public" value="Nov 27 2009 3:08PM " /> <ModifiedBy title="ModifiedBy" display="No" right="Public" value="12" /> <ModifiedOn title="ModifiedOn" display="No" right="Public" value="Feb 18 2010 1:43PM " /> <LogInStatusId title="LogInStatusId" display="No" right="Public" value="1" /> <LogInStatus title="LogIn Status" display="Yes" right="Private" value="Free" /> <ProfileImagePath title="Profile Pic" display="No" right="Public" value="~/Images/96.jpg" /> </Fields> </BasicInfo> <PersonalInfo> <Title value="Personal Details" /> <Fields> <Nickname title="Nick Name" display="Yes" right="Public" value="Rahul" /> <NativeLocation title="Native" display="Yes" right="Public" value="Amreli" /> <DateofAnniversary title="Anniversary Dt." display="Yes" right="Public" value="12/29/2008" /> <BloodGroupId title="BloodGroupId" display="No" right="Public" value="25" /> <BloodGroupName title="Blood Group" display="Yes" right="Public" value="25" /> <MaritalStatusId title="MaritalStatusId" display="No" right="Public" value="34" /> <MaritalStatusName title="Marital status" display="Yes" right="Private" value="34" /> <DateofDeath title="Death dt" display="Yes" right="Private" value="" /> <CreatedBy title="CreatedBy" display="No" right="Public" value="12" /> <CreatedOn title="CreatedOn" display="No" right="Public" value="Jan 6 2010 2:59PM " /> <ModifiedBy title="ModifiedBy" display="No" right="Public" value="12" /> <ModifiedOn title="ModifiedOn" display="No" right="Public" value="3/10/2010 5:34:14 PM" /> </Fields> </PersonalInfo> <FamilyInfo> <Title value="Family Details" /> <Fields> <GallantryHistory title="Gallantry History" display="Yes" right="Public" value="Gallantry history rahul" /> <Ethinicity title="Ethinicity" display="Yes" right="Public" value="ethnicity rahul" /> <KulDev title="KulDev" display="Yes" right="Public" value="Krishna" /> <KulDevi title="KulDevi" display="Yes" right="Public" value="Khodiyar" /> <Caste title="Caste" display="Yes" right="Private" value="Brhamin" /> <SunSignId title="SunSignId" display="No" right="Public" value="20" /> <SunSignName title="SunSignName" display="Yes" right="Public" value="Scorpio" /> <CreatedBy title="CreatedBy" display="No" right="Public" value="12" /> <CreatedOn title="CreatedOn" display="No" right="Public" value="Dec 29 2009 4:59PM " /> <ModifiedBy title="ModifiedBy" display="No" right="Public" value="12" /> <ModifiedOn title="ModifiedOn" display="No" right="Public" value="3/10/2010 6:29:56 PM" /> </Fields> </FamilyInfo> <HobbyInfo> <Title value="Hobbies/Interests" /> <Fields> <AbountMe title="Abount Me" display="Yes" right="Public" value="Naughty.... " /> <Hobbies title="Hobbies" display="Yes" right="Public" value="Dance, Music, decoration, Shopping" /> <Food title="Food" display="Yes" right="Public" value="Maxican salsa, Pizza, Khoya kaju " /> <Movies title="Movies" display="Yes" right="Public" value="day after tommorrow. wake up sid. avatar" /> <Music title="Music" display="Yes" right="Public" value="Chu kar mere man ko... wake up sid songs, slow music, apgk songs" /> <TVShows title="TV Shows" display="Yes" right="Public" value="business bazzigar, hanah montana" /> <Books title="Books" display="Yes" right="Public" value="mystry novels" /> <Sports title="Sports" display="Yes" right="Public" value="Badminton" /> <Will title="Will" display="Yes" right="Public" value="do photography, to have my own super home... and i can decorate it like anything..." /> <FavouriteQuotes title="Favourite Quotes" display="Yes" right="Public" value="Live like a king nothing lasts forever. not even your troubles smooth sea do not makes skillfull sailors" /> <CremationPrefernces title="Cremation Prefernces" display="Yes" right="Public" value="" /> <CreatedBy title="CreatedBy" display="No" right="Public" value="12" /> <CreatedOn title="CreatedOn" display="No" right="Public" value="Feb 24 2010 2:13PM " /> <ModifiedBy title="ModifiedBy" display="No" right="Public" value="12" /> <ModifiedOn title="ModifiedOn" display="No" right="Public" value="Mar 2 2010 4:34PM " /> </Fields> </HobbyInfo> <PermenantAddr> <Title value="Permenant Address" /> <Fields> <Address title="Address" display="Yes" right="Public" value="Test Entry" /> <CityId title="CityId" display="No" right="Public" value="93" /> <CityName title="City" display="Yes" right="Public" value="Chennai" /> <StateId title="StateId" display="No" right="Public" value="89" /> <StateName title="State" display="Yes" right="Public" value="Tamil Nadu" /> <CountryId title="CountryId" display="No" right="Public" value="108" /> <CountryName title="Country" display="Yes" right="Public" value="India" /> <ZipCode title="ZipCode" display="Yes" right="Private" value="360019" /> <CreatedBy title="CreatedBy" display="No" right="Public" value="12" /> <CreatedOn title="CreatedOn" display="No" right="Public" value="Jan 6 2010 1:29PM " /> <ModifiedBy title="ModifiedBy" display="No" right="Public" value="0" /> <ModifiedOn title="ModifiedOn" display="No" right="Public" value=" " /> </Fields> </PermenantAddr> <PresentAddr> <Title value="Present Address" /> <Fields> <Address title="Ethinicity" display="Yes" right="Public" value="" /> <CityId title="CityId" display="No" right="Public" value="" /> <CityName title="City" display="Yes" right="Public" value="" /> <StateId title="StateId" display="No" right="Public" value="" /> <StateName title="State" display="Yes" right="Public" value="" /> <CountryId title="CountryId" display="No" right="Public" value="" /> <CountryName title="Country" display="Yes" right="Public" value="" /> <ZipCode title="ZipCode" display="Yes" right="Public" value="" /> <CreatedBy title="CreatedBy" display="No" right="Public" value="" /> <CreatedOn title="CreatedOn" display="No" right="Public" value="" /> <ModifiedBy title="ModifiedBy" display="No" right="Public" value="" /> <ModifiedOn title="ModifiedOn" display="No" right="Public" value="" /> </Fields> </PresentAddr> <ContactInfo> <Title value="Contact Details" /> <Fields> <DayPhoneNo title="Day Phone" display="Yes" right="Public" value="" /> <NightPhoneNo title="Night Phone" display="Yes" right="Public" value="" /> <MobileNo title="Mobile No" display="Yes" right="Private" value="" /> <FaxNo title="Fax No" display="Yes" right="CUG" value="" /> <CreatedBy title="CreatedBy" display="No" right="Public" value="12" /> <CreatedOn title="CreatedOn" display="No" right="Public" value="Jan 5 2010 12:37PM " /> <ModifiedBy title="ModifiedBy" display="No" right="Public" value="12" /> <ModifiedOn title="ModifiedOn" display="No" right="Public" value="Feb 17 2010 1:37PM " /> </Fields> </ContactInfo> <EmailInfo> <Title value="Alternate Email Addresses" /> <Fields /> </EmailInfo> <AcademicInfo> <Title value="Education Details" /> <Fields> <Record right="Public"> <Education title="Education" display="Yes" value="Full Attendance" /> <Institute title="Institute" display="Yes" value="Attendance" /> <PassingYear title="Passing Year" display="Yes" value="2000" /> <IsActive title="IsActive" display="No" value="false" /> <CreatedBy title="CreatedBy" display="No" value="12" /> <CreatedOn title="CreatedOn" display="No" value="Dec 31 2009 12:41PM " /> <ModifiedBy title="ModifiedBy" display="No" value="12" /> <ModifiedOn title="ModifiedOn" display="No" value="Dec 31 2009 12:41PM " /> </Record> <Record right="Public"> <Education title="Education" display="Yes" value="D.C.E." /> <Institute title="Institute" display="Yes" value="G.P.G" /> <PassingYear title="Passing Year" display="Yes" value="2005" /> <IsActive title="IsActive" display="No" value="true" /> <CreatedBy title="CreatedBy" display="No" value="12" /> <CreatedOn title="CreatedOn" display="No" value="Dec 31 2009 12:45PM " /> <ModifiedBy title="ModifiedBy" display="No" value="12" /> <ModifiedOn title="ModifiedOn" display="No" value="Dec 31 2009 12:45PM " /> </Record> <Record right="Public"> <Education title="Education" display="Yes" value="MCSE" /> <Institute title="Institute" display="Yes" value="MCSE" /> <PassingYear title="Passing Year" display="Yes" value="2009" /> <IsActive title="IsActive" display="No" value="true" /> <CreatedBy title="CreatedBy" display="No" value="12" /> <CreatedOn title="CreatedOn" display="No" value="Dec 31 2009 6:12PM " /> <ModifiedBy title="ModifiedBy" display="No" value="12" /> <ModifiedOn title="ModifiedOn" display="No" value="Mar 2 2010 4:33PM " /> </Record> <Record right="Public"> <Education title="Education" display="Yes" value="H.S.C." /> <Institute title="Institute" display="Yes" value="G.H.S.E.B." /> <PassingYear title="Passing Year" display="Yes" value="2002" /> <IsActive title="IsActive" display="No" value="true" /> <CreatedBy title="CreatedBy" display="No" value="12" /> <CreatedOn title="CreatedOn" display="No" value="Dec 31 2009 6:17PM " /> <ModifiedBy title="ModifiedBy" display="No" value="12" /> <ModifiedOn title="ModifiedOn" display="No" value="Dec 31 2009 6:17PM " /> </Record> <Record right="Public"> <Education title="Education" display="Yes" value="S.S.C." /> <Institute title="Institute" display="Yes" value="G.S.E.B." /> <PassingYear title="Passing Year" display="Yes" value="2000" /> <IsActive title="IsActive" display="No" value="true" /> <CreatedBy title="CreatedBy" display="No" value="12" /> <CreatedOn title="CreatedOn" display="No" value="Dec 31 2009 6:17PM " /> <ModifiedBy title="ModifiedBy" display="No" value="12" /> <ModifiedOn title="ModifiedOn" display="No" value="Dec 31 2009 6:17PM " /> </Record> </Fields> </AcademicInfo> <AchievementInfo> <Title value="Achievement Details" /> <Fields> <Record right="Public"> <Awards title="Award" display="Yes" value="Test Entry" /> <FieldOfAward title="Field Of Award" display="Yes" value="Test Entry" /> <Tournament title="Tournament" display="Yes" value="Test Entry" /> <AwardDescription title="Description" display="Yes" value="Test Entry" /> <AwardYear title="Award Year" display="Yes" value="2002" /> <IsActive title="IsActive" display="No" value="true" /> <CreatedBy title="CreatedBy" display="No" value="12" /> <CreatedOn title="CreatedOn" display="No" value="Dec 31 2009 3:51PM " /> <ModifiedBy title="ModifiedBy" display="No" value="12" /> <ModifiedOn title="ModifiedOn" display="No" value="Dec 31 2009 3:51PM " /> </Record> <Record right="Public"> <Awards title="Award" display="Yes" value="Test Entry" /> <FieldOfAward title="Field Of Award" display="Yes" value="Test Entry" /> <Tournament title="Tournament" display="Yes" value="Test Entry" /> <AwardDescription title="Description" display="Yes" value="Test Entry" /> <AwardYear title="Award Year" display="Yes" value="2005" /> <IsActive title="IsActive" display="No" value="true" /> <CreatedBy title="CreatedBy" display="No" value="12" /> <CreatedOn title="CreatedOn" display="No" value="Jan 8 2010 10:19AM " /> <ModifiedBy title="ModifiedBy" display="No" value="12" /> <ModifiedOn title="ModifiedOn" display="No" value="Jan 8 2010 10:19AM " /> </Record> <Record right="Public"> <Awards title="Award" display="Yes" value="Test Entry3" /> <FieldOfAward title="Field Of Award" display="Yes" value="Test Entry3" /> <Tournament title="Tournament" display="Yes" value="Test Entry3" /> <AwardDescription title="Description" display="Yes" value="Test Entry3" /> <AwardYear title="Award Year" display="Yes" value="2007" /> <IsActive title="IsActive" display="No" value="true" /> <CreatedBy title="CreatedBy" display="No" value="12" /> <CreatedOn title="CreatedOn" display="No" value="Dec 31 2009 11:47AM " /> <ModifiedBy title="ModifiedBy" display="No" value="12" /> <ModifiedOn title="ModifiedOn" display="No" value="Dec 31 2009 11:47AM " /> </Record> <Record right="Public"> <Awards title="Award" display="Yes" value="Test Entry4" /> <FieldOfAward title="Field Of Award" display="Yes" value="Test Entry4" /> <Tournament title="Tournament" display="Yes" value="Test Entry4" /> <AwardDescription title="Description" display="Yes" value="Test Entry3" /> <AwardYear title="Award Year" display="Yes" value="2000" /> <IsActive title="IsActive" display="No" value="false" /> <CreatedBy title="CreatedBy" display="No" value="12" /> <CreatedOn title="CreatedOn" display="No" value="Dec 31 2009 11:47AM " /> <ModifiedBy title="ModifiedBy" display="No" value="12" /> <ModifiedOn title="ModifiedOn" display="No" value="Dec 31 2009 11:47AM " /> </Record> </Fields> </AchievementInfo> <ProfessionalInfo> <Title value="Professional Details" /> <Fields> <Record right="Public"> <Occupation title="Occupation" display="Yes" value="Test Entry" /> <Organization title="Organization" display="Yes" value="Test Entry" /> <ProjectsDescription title="Description" display="Yes" value="Test Entry" /> <Duration title="Duration" display="Yes" value="26" /> <IsActive title="IsActive" display="No" value="false" /> <CreatedBy title="CreatedBy" display="No" value="12" /> <CreatedOn title="CreatedOn" display="No" value="Jan 4 2010 3:01PM " /> <ModifiedBy title="ModifiedBy" display="No" value="12" /> <ModifiedOn title="ModifiedOn" display="No" value="Jan 4 2010 3:01PM " /> </Record> <Record right="Public"> <Occupation title="Occupation" display="Yes" value="Test Entry" /> <Organization title="Organization" display="Yes" value="Test Entry" /> <ProjectsDescription title="Description" display="Yes" value="Test Entry" /> <Duration title="Duration" display="Yes" value="10" /> <IsActive title="IsActive" display="No" value="false" /> <CreatedBy title="CreatedBy" display="No" value="12" /> <CreatedOn title="CreatedOn" display="No" value="Jan 4 2010 3:01PM " /> <ModifiedBy title="ModifiedBy" display="No" value="12" /> <ModifiedOn title="ModifiedOn" display="No" value="Jan 4 2010 3:01PM " /> </Record> <Record right="Public"> <Occupation title="Occupation" display="Yes" value="Test Entry" /> <Organization title="Organization" display="Yes" value="Test Entry" /> <ProjectsDescription title="Description" display="Yes" value="Test Entry" /> <Duration title="Duration" display="Yes" value="15" /> <IsActive title="IsActive" display="No" value="false" /> <CreatedBy title="CreatedBy" display="No" value="12" /> <CreatedOn title="CreatedOn" display="No" value="Jan 4 2010 3:01PM " /> <ModifiedBy title="ModifiedBy" display="No" value="12" /> <ModifiedOn title="ModifiedOn" display="No" value="Jan 4 2010 3:01PM " /> </Record> </Fields> </ProfessionalInfo> </UserProfile> now for tags like PersonalInfo,contactInfo,Address there will be only one record, but for tags like "OtherInfo","academicInfo","ProfessionalInfo" there will be multiple records so in xml there are tags for that. now to edit tags having one record only for one user i did coding like: private void FillFamilyInfoControls(XElement rootElement) { ddlSunsign.DataBind(); XElement parentElement; string xPathQuery = "FamilyInfo/Fields"; parentElement = rootElement.XPathSelectElement(xPathQuery); txtGallantryHistory.Text = parentElement.Element("GallantryHistory").Attribute("value").Value; txtEthinicity.Text = parentElement.Element("Ethinicity").Attribute("value").Value; txtKulDev.Text = parentElement.Element("KulDev").Attribute("value").Value; txtKulDevi.Text = parentElement.Element("KulDevi").Attribute("value").Value; txtCaste.Text = parentElement.Element("Caste").Attribute("value").Value; ddlSunsign.SelectedValue = parentElement.Element("SunSignId").Attribute("value").Value; ddlSunsign.SelectedItem.Text = parentElement.Element("SunSignName").Attribute("value").Value; } private XElement UpdateFamilyInfoXML(XElement rootElement) { XElement parentElement; string xPathQuery = "FamilyInfo/Fields"; parentElement = rootElement.XPathSelectElement(xPathQuery); parentElement.Element("GallantryHistory").Attribute("value").Value = txtGallantryHistory.Text; parentElement.Element("Ethinicity").Attribute("value").Value = txtEthinicity.Text; parentElement.Element("KulDev").Attribute("value").Value = txtKulDev.Text; parentElement.Element("KulDevi").Attribute("value").Value = txtKulDevi.Text; parentElement.Element("Caste").Attribute("value").Value = txtCaste.Text; parentElement.Element("SunSignId").Attribute("value").Value = ddlSunsign.SelectedItem.Value; parentElement.Element("SunSignName").Attribute("value").Value = ddlSunsign.SelectedItem.Text; parentElement.Element("ModifiedBy").Attribute("value").Value = UMSession.CurrentLoggedInUser.UserId.ToString(); parentElement.Element("ModifiedOn").Attribute("value").Value = System.DateTime.Now.ToString(); return rootElement; //rootElement.XPathSelectElement(xPathQuery) = parentElement; } these 2 functions i have used to update xml and to get data from xml and fill into controls. but for the tags where there are multiple records... i am not able to find any solution /control using which i an do it easily. coz my field's value is in attribute named "Value" when in the examples i saw its between opening and closing tag.. i have 2 methods to do so. 1 . i make one page to edit a single record and pass id of record to that page on editing. open the page in iframe on same page to edit and in page_load get data from database for id passed and fill it in control. 2 . i store xml on server as physical file and use it in page i opened in iframe to edit the record. so i am confused... can anybody please guide me that what shpould i do to let user provide interface to edit this xml data/user profile ?

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  • jQuery Context Menu Plugin and Capturing Right-Click

    - by Ben Griswold
    I was thrilled to find Cory LaViska’s jQuery Context Menu Plugin a few months ago. In very little time, I was able to integrate the context menu with the jQuery Treeview.  I quickly had a really pretty user interface which took full advantage of limited real estate.  And guess what.  As promised, the plugin worked in Chrome, Safari 3, IE 6/7/8, Firefox 2/3 and Opera 9.5.  Everything was perfect and I shipped to the Integration Environment. One thing kept bugging though – right clicks aren’t the standard in a web environment. Sure, when one hovers over the treeview node, the mouse changed from an arrow to a pointer, but without help text most users will certainly left-click rather than right. As I was already doubting the design decision, we did some Mac testing.  The context menu worked in Firefox but not Safari.  Damn.  That’s when I started digging into the Madness of Javascript Mouse Events.  Don’t tell, but it’s complicated.  About as close as one can get to capture the right-click mouse event on all major browsers on Windows and Mac is this: if (event.which == null) /* IE case */ button= (event.button < 2) ? "LEFT" : ((event.button == 4) ? "MIDDLE" : "RIGHT"); else /* All others */ button= (event.which < 2) ? "LEFT" : ((event.which == 2) ? "MIDDLE" : "RIGHT"); Yikes.  The content menu code was simply checking if event.button == 2.  No problem.  Cory offers a jQuery Right Click Plugin which I’m sure works for windows but probably not the Mac either.  (Please note I haven’t verified this.) Anyway, I decided to address my UI design concern and the Safari Mac issue in one swoop.  I decided to make the context menu respond to any mouse click event.  This didn’t take much – especially after seeing how Bill Beckelman updated the library to recognize the left click. First, I added an AnyClick option to the library defaults: // Any click may trigger the dropdown and that's okay // See Javascript Madness: Mouse Events – http: //unixpapa.com/js/mouse.html if (o.anyClick == undefined) o.anyClick = false; And then I trigger the context menu dropdown based on the following conditional: if (evt.button == 2 || o.anyClick) { Nothing tricky about that, right?  Finally, I updated my menu setup to include the AnyClick value, if true: $('.member').contextMenu({ menu: 'memberContextMenu', anyClick: true },             function (action, el, pos) {                 … Now the context menu works in “all” environments if you left, right or even middle click.  Download jQuery Context Menu Plugin for Any Click *Opera 9.5 has an option to allow scripts to detect right-clicks, but it is disabled by default. Furthermore, Opera still doesn’t allow JavaScript to disable the browser’s default context menu which causes a usability conflict.

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  • Symfony/Propel NestedSet left/right ID corruption/adjustment

    - by Mike Crowe
    Hi folks, I have a nested set application that seems to be getting corrupted. Here's what I'm seeing: We're using nested sets for a binary tree (any node can have 2 children). It appears to be working fine, but some event causes a discrepancy. For instance, when I do a getNumberOfDescendants() for the root node, it will slowly increase as this event happens. However, displaying the tree works fine, as does inserting (apparently). Has anybody seen anything like this before? For instance, my repair program shows this as the repairs that it makes: User pxxxxx left 0=>0, right 145=>129 User axxxxx left 1=>1, right 124=>106 User mxxxxx left 119=>117, right 120=>118 User fxxxxx left 125=>107, right 144=>128 User fxxxxx left 126=>108, right 131=>113 User rxxxxx left 127=>109, right 128=>110 User mxxxxx left 129=>111, right 130=>112 User mxxxxx left 132=>114, right 143=>127 User cxxxxx left 133=>115, right 142=>126 User gxxxxx left 134=>116, right 137=>121 User mxxxxx left 135=>119, right 136=>120 User jxxxxx left 138=>122, right 141=>125 User axxxxx left 139=>123, right 140=>124 I thought at first it was when I deleted a user, but it has since occurred w/o that event. Anybody know of a cause that might generate this? I've tested ad nauseum on my local machine, but I can't duplicate it. I do have an issue where my production box is PHP 5.2.0, whereas my test device is 5.2.10. Could that be an issue? TIA Mike

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  • Mapping Left Alt key in vim?

    - by Yogesh Arora
    I am able to map the key combination Right Alt+Left Arrow with <a-left> or by <m-left>. But I am not able to map the Left Alt key. Is there a way to do that? Edit: Just to clarity <a-left> means Alt+Left Arrow. The important question here is what is difference between Left Alt and Right Alt from the perspective of keymappings in Vim?

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  • Right-to-left script fails with Flash Player

    - by maria
    I am continuing an abandoned thread arabic reading error, since it was not solved. I'm using Ubuntu 10.04, Firefox 3.6.14. I've checked for Flash Player, I have the recent version installed. In the Flash Player window arabic script appears in wrong direction. The letters are displayed from left to right and not, as it should be, from right to left. For exemple http://www.fpnp.net/. The problematic place is the black bar in Flash window with a text below the image on the right. Here the letters are displayed in wrong direction and, by consequence, are not joined. You can see (I hope) the difference between that black bar and the rest of the text. Hope it will understandable for not Arabic-speaking people. Thanks

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  • Bind Ctrl+Right to nextword in nano (as it is in all other apps)

    - by turbo
    And likewise Ctrl+Left to prevword. I read the man page of nanorc and found bind key function menu So the line bind ^Left prevword main would be what I want, the problem is that nano only accepts an alpha character or the word "Space" so Left doesn't exist. Is there a way to accomplish this? Right now I'm on natty (nano 2.2.2) but I will upgrade nano if a later (devel?) version can do this.

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  • Reassign the Right button functionality of touchpad

    - by Guandalino
    My notebook has a touchpad with two buttons. The touchpad works pretty well and I use it for vertical/horizontal scroll, two fingers scrolling etc. The Left button acts like the left button of a mouse. The Right button too, when clicked it makes appear the classic contextual menu (create new folder, move to trash etc...). The problem is that Right button doesn't work anymore for mechanical reasons, so pressing it has no effect. To recover the missing functionality, I'd like that pressing CTRL + Left button I get the same thing of pressing the Right button alone. Other combinations (CTRL + SHIFT + Left button) are also acceptable. Any way to do that?

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  • Rotate object Up/Down/Left/Right in any orientation

    - by George Duckett
    I'm rendering model at the origin with a fixed camera looking at it positioned on the z axis. I want to be able to rotate the model up/down and left/right. Currently I have 2 variables, HorizontalRotation and VerticalRotation. When calculating the world matrix I rotate about the Y axis by HorizontalRotation and about the X axis by VerticalRotation. The ..Rotation variables are controlled by pressing up/down/left/right arrow keys. The problem I'm having is that the rotations are happening relative to the object. Lets say it's a model of the world. Pressing Up a bit would let me look at the north pole. Currently when i press right the earth spins infront of the camera on its axis; I'm still looking at the north pole. How can i get it so that no matter what rotations are currently applied i can always rotate my model relative to the camera/world axis?

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  • Strange right click problem?

    - by KashmirHackers
    Last night I installed some applications and updated my Ubuntu 12.04 LTS,since then I encountered a strange right click problem, that is my right click is not working but when I open home folder from launcher right click works again. Actually problems starts last night when my desktop wallpaper changes suddenly to Ubuntu default, when I tried to change wallpaper I find that my right click is not working. I tried to reboot system but that also not solved my problem,i clicked here and there but when I opened the home folder my wallpaper changed again to previous one and when I checked the right click it is also working. Now the problem is that this problem comes back again whenever I turn on my system,and also whenever this problem occurs the Ubuntu desktop menu bar also disappears from unity top panel. Don't know what is really going on, please can anybody help me.

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  • Right click doesn't work on HP mini 210 touchpad

    - by user4041
    Need help in getting the right mouse click to work on a HP mini 210-1015TU when using the touchpad. If I plug in a USB mouse, both left click and right click function as normal. Using the touchpad however I can only get the left click to work. Attempting to right click gives the result expected from a left click. As per some comments on a forum I added a file 11-touchpad.conf to /usr/share/X11/xorg.conf.d. I can provide further details if required. This made touchpad operation noticeably smoother but the problem with the right mouse click remains. Not a hardware problem as right clicked worked with 10.04 and still works with Windows 7 starter. 10.10 installed using wubi.

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  • Can't Move Windows to 2nd Monitor without Left Mouse and Cntl Key

    - by John C
    I have 2 very frustrating problems that maybe someone can help me with: I have 2 monitors (different sizes and resolutions) setup with the "Extended" monitor Win7 setup. My problem is this = I can not "move" a window from my Primary Monitor (larger and higher resolution on right side in front of me) to my Secondary 2nd monitor (smaller and lower resolution) with just selecting the title bar with the left mouse button and dragging it to the left. Windows 7 "snaps" it back to the left Primary Monitor when the window is physically in the 2nd window area as I'm holding the left mouse button. I can prevent this problem - by holding down the Cntl Key with the Left Mouse button, but this is extremely annoying to me. Also I typically "lose" focus if I try typing input on the 2nd monitor. Typing is erratic with regard to keystroke accuracy from my keyboard translated into input on the 2nd screen. No problem with typing input on the primary left monitor. I find this extremely annoying in Windows 7 and turning off the "snap" feature via the Control panel does NOT work for me. Win7 stubbornly refuses to move my selected window to my 2nd monitor without me "forcing" Win7 to do this with the Cntrl Key. Please tell me this is not a Win7 feature. Also on my system - Windows Key + Shift, Left arrow Key (pressed together) or the same combo with The Right arrow Key - don't do anything whatsoever. Widows Key with "+" however does maximize current window across both monitors, and I can "restore" it with Windows Key and "-" back to original monitor and size. I have tried various solutions including changing the resolutions of one or both of my monitors and sometimes "temporarily helps" but reverts back to the problem. Also if I swap the logical (not physical) layout so that I tell Win7 the monitors are setup in a reserved situation (Large monitor on the left, and small on the right) - this also sometimes helps for awhile - and is very strange and awkward to work with "backwards". But all of these solutions stop working. The only solution that consistently works for "moving" the screens is to hold the Cntrl Key down as I'm moving window with the left mouse selected on the title bar. Even that however, doesn't prevent the loss of typing focus for me on the 2nd monitor - while at the same time the typing on the 1st monitor is fine. Any help on moving my window screens from one monitor on my 2nd monitor without having to press the Cntrl key while holding down my left mouse button with be appreciated. Also any help on gaining typing "focus" into my 2nd screen with be helpful too. Thanks - John

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  • I have to "stab" at the upper left corner to get launcher to appear

    - by Johnny M
    Running 12.04 LTS. This is extremely annoying and makes me want to try another flavor of Linux. Yes, this little inconvenience is that annoying to me. Most of the time the launcher will appear nice and easy as soon as I mouse over the upper left corner, but many times, the left edge of the screen will get a little darker, but the launcher will not appear. By seeing the edge darken, I know that the OS is acknowledging my mouse's presence in the corner. Only by "stabbing" the corner with my mouse can I get it to appear. I just want the launcher to appear as soon as I mouse over the corner. Any help would be great.

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  • Coordinates on the top left corner or center of the tile

    - by soimon
    I'm setting up a tile system where every tile has x and y coordinates. Right now I assume that the top left corner of the tile is positioned on it's coordinate on the screen, x = tileX * tileWidth and y = tileY x tileWidth. However, it seems strange that the tile with coordinate (0, 0) is completely drawn in the 'positive' side of the coordinate system as opposed to in the center of the origin. Is it common practice to assume that a coordinate lays in the center of a tile or at the top left corner of a tile? So basically x = tileX x tileWidth or x = tileX x tilewidth - ( tileWidth / 2 )?

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  • Mouse permanently stuck on left side of screen

    - by Alex
    One of my two monitors is died, so while my computer was turned off I unplugged the dead monitor then turned my computer back on. When I got to the log in page I typed my password and got to the desktop my mouse was stuck to the left edge of the screen. I can move it up and down, and left and right click, but it won't come off the edge. I tried switching the monitor cable to the other slot to see if that would make a difference but nothing changed. If it makes a difference, I'm using Kubuntu.

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  • How to get a point to the left/right of a vector

    - by MulletDevil
    I have a position vector of a point in space and a quaternion for it's rotation. What i'm trying to calculate is a point too the left and a point to the right. I have the position and rotation(quaternion) of the red dot. What I want is to get the position of the green dots. I have a float value for the distance I want these points to be. With only the position and rotation is it possible to get a unit direction vector pointing left/right which I can multiply by my float value? Edit: I also know the original direction vector.

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  • Workspeace view shows first workspaces out of border at left

    - by Jeremi Roivas
    I am using nvidia-current and edited from settings my monitors so that my second monitor is at left and unity-panel shows only in my main monitor. How ever now the workspaces images have shifted so that second monitor first workpsaces are moved out of the left border and when the monitor is not turn on I can't see the the workspaces there. Sometimes programs have been moved when monitor is been flashed to the workspace shown in out of border and I have no means to move the program windows into my main workspace views. Image: http://but.fi/2em As you see the second monitor works as it should work but my main monitor is fooked. Is this possible way to fix this some how?

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  • No inodes left error, df -i command says contrary

    - by abhinavkulkarni
    I copied a lot of files in my mounted Windows drive from Ubuntu and I subsequently ran into Error opening file '/media/windows/<some-file-path>': No space left on device error. I checked the output of df -i command to see if I had ran out of inodes for the mounted Windows drive: Filesystem Inodes IUsed IFree IUse% Mounted on /dev/sda5 2363904 504119 1859785 22% / udev 207621 522 207099 1% /dev tmpfs 211487 450 211037 1% /run none 211487 3 211484 1% /run/lock none 211487 7 211480 1% /run/shm none 211487 19 211468 1% /run/user /dev/sda2 458686680 2588876 456097804 1% /media/windows As above output shows, lots of inodes are available for /media/windows drive. I have plenty of disk space left - around 500GB. What's the problem then?

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  • Keypress Left is called twice in Update when key is pressed only once

    - by Simran kaur
    I have a piece of code that is changing the position of player when left key is pressed. It is inside of Update() function. I know, Update is called multiple times, but since I have an ifstatement to check if left arrow is pressed, it should update only once. I have tested using print statement that once pressed, it gets called twice. Problem: Position updated twice when key is pressed only once. Below given is the structure of my code: void Update() { if (Input.GetKeyDown (KeyCode.LeftArrow)) { print ("PRESSEEEEEEEEEEEEEEEEEEDDDDDDDDDDDDDD"); } } I looked up on web and what was suggested id this: if (Event.current.type == EventType.KeyDown && Event.current.keyCode == KeyCode.LeftArrow) { print("pressed"); } But, It gives me an error that says: Object reference not set to instance of an object How can I fix this?

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  • Nautilus left pane does not expand

    - by dn.usenet
    I would prefer the left pane of Nautilus to behave like Windows file manager. It should have expandable/collapsible trees, and if I have /home/mydir-1, /home/mydir-2, I should be able to see them both in the left pane. When I click on one of them, the files in that dir should show in the right pane. If Nautilus can't do it, please suggest a better file-manager which does. I would rather not open 3 panes in Nautilus to do what two panes do just fine in Windows File Manager. Secondly how can I open two instances of Nautilus? And if it isn't possible with Nautilus, could it be done with some other file manager?

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  • Flashing screen hovering over menubar on left side

    - by iwekb
    Just installed Ubuntu 10.10 netbook version on an older Dell Laptop (no other operating system installed). When hovering with mouse over menu bar, the full screen changes to default coloured back ground shortly and then back to normal (as after start-up) again. And that each time the mouse is over any of the (default) icons on the menu bar. I am not able to select any icon. No left or right click works on icons or anywhere on the menubar apart from the left top small icon, white Ubuntu logo, and the right top small icons for WiFi, sound, mail, shut-down etc. Those icons work. I tried re-installation again and all patches are downloaded. Same problem. Problem is that I can't enter commands either to reduce e.g. the swappiness (if that would be of any help). Can somebody help me that encountered similar problem or knows a resolution?

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  • How do I get my text to be direction from right to left without using a p tag?

    - by smfoote
    I have a dynamically appearing div on a page. I would like to be able to hide the div with a button at the top right corner of the div. One way I have found to do this is to use a p tag, like so: <p dir="RTL">button</p> If this is the first line of HTML within the div, it will put the button in the upper right hand corner of the div. However, it gives me a new line above and a new line below, so, the button isn't really where I want it to be. The "dir" attribute doesn't seem to work with a span tag, and if I display the p tag inline using css p { display:inline; } the button is no longer right aligned. Instead it stays in the left hand corner. Is there a way to get this button in the upper right hand corner without two unnecessary new lines and without a bunch of  ?

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