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  • Can Django admin handle a one-to-many relationship via related_name?

    - by Mat
    The Django admin happily supports many-to-one and many-to-many relationships through an HTML <SELECT> form field, allowing selection of one or many options respectively. There's even a nice Javascript filter_horizontal widget to help. I'm trying to do the same from the one-to-many side through related_name. I don't see how it's much different from many-to-many as far as displaying it in the form is concerned, I just need a multi-select SELECT list. But I cannot simply add the related_name value to my ModelAdmin-derived field list. Does Django support one-to-many fields in this way? My Django model something like this (contrived to simplify the example): class Person(models.Model): ... manager = models.ForeignKey('self', related_name='staff', null=True, blank=True, ) From the Person admin page, I can easily get a <SELECT> list showing all possible staff to choose this person's manager from. I also want to display a multiple-selection <SELECT> list of all the manager's staff. I don't want to use inlines, as I don't want to edit the subordinates details; I do want to be able to add/remove people from the list. (I'm trying to use django-ajax-selects to replace the SELECT widget, but that's by-the-by.)

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  • jQuery find value then replace SRC

    - by Charles Web Dev
    Hello all, Can anyone see anything that is wrong with this code it just isn't working... I am tring to: get the value of #product-variants-option-0 search #preload for the relevant image and then change div.image img src to that image jQuery(document).ready(function($) { $('#product-variants-option-0').change(function() { // What is the sku of the current variant selection. var select_value = $(this).find(':selected').val(); if (select_value == "Kelly Green") { var keyword = "kly"; }; var new_src = $('#preload img[src*=keyword]'); $('div.image img').attr('src', new_src); }); }); The selection: <select class="single-option-selector-0" id="product-variants-option-0"> <option value="Kelly Green">Kelly Green</option> <option value="Navy">Navy</option> <option value="Olive">Olive</option> <option value="Cocoa">Cocoa</option> </select> I'm trying to search an unordered list: <ul id="preload" style="display:none;"> <li><img src="0z-kelly-green-medium.jpg"/></li> <li><img src="0z-olive-medium.jpg"/></li> </ul> The image I'm trying to replace is this:

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  • Reloading a JTree during runtime

    - by Patrick Kiernan
    I create a JTree and model for it out in a class separate to the GUI class. The data for the JTree is extracted from a file. Now in the GUI class the user can add files from the file system to an AWT list. After the user clicks on a file in the list I want the JTree to update. The variable name for the JTree is schemaTree. I have the following code for the when an item in the list is selected: private void schemaListItemStateChanged(java.awt.event.ItemEvent evt) { int selection = schemaList.getSelectedIndex(); File selectedFile = schemas.get(selection); long fileSize = selectedFile.length(); fileInfoLabel.setText("Size: " + fileSize + " bytes"); schemaParser = new XSDParser(selectedFile.getAbsolutePath()); TreeModel model = schemaParser.generateTreeModel(); schemaTree.setModel(model); } I've updated the code to correspond to the accepted answer. The JTree now updates correctly based on which file I select in the list.

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  • Rich editor.. need to replace ccorrect string...

    - by JamesM
    On my website I have a login and an article tag for editing. my article code is in HTML5 witch is enough as my editor rule is HTML5: HTML5: index.php line 212 <article contentEditable="false"> >> Changes to true when in edit mode.. <div>One row of text goes here.</div> <div>Row two's content goes here.</div> </article> I want to be able to get the selected text via JS. JS: js.php format : (function(format){ if (user = "{$ADMIN}"){ selection = getSelection(); text = selection.toString(); switch(format){ case "big": result = text.big(); break; case "small": result = text.small(); break; case "bold": result = text.bold(); break; case "italics": result = text.italics(); break; case "fixed": result = text.fixed(); break; case "strike": result = text.strike(); break; case "fontcolor": result = text.fontcolor(); break; case "fontsize": result = text.fontsize(); break; case "sub": result = text.sub(); break; case "sup": result = text.sup(); break; case "link": result = text.link(); break; } } }), I can replace the text with the result but that will replace all of them I a=can do only the first but i want to do it to the selected...

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  • WPF Designer has bug with parsing generic control with overrided property

    - by Ivan Laktyunkin
    I've created a generic lookless control with virtual property: public abstract class TestControlBase<TValue> : Control { public static readonly DependencyProperty ValueProperty; static TestControlBase() { ValueProperty = DependencyProperty.Register("Value", typeof(TValue), typeof(TestControlBase<TValue>)); } protected TestControlBase() { Focusable = false; Value = default(TValue); } public virtual TValue Value { get { return (TValue)GetValue(ValueProperty); } set { SetValue(ValueProperty, value); } } } Then I've made a control derived from it and overrided Value property: public class TestControl : TestControlBase<int> { public override int Value { get { return base.Value; } set { base.Value = value; } } } So I use it in a Window XAML: <TestControls:TestControl /> When I open window in designer all is OK, but when I put mouse cursor to this line, or to this control in designer I receive exception: Exception has been thrown by the target of an invocation. at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) at System.Delegate.DynamicInvokeImpl(Object[] args) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) Ambiguous match found. at System.RuntimeType.GetPropertyImpl(String name, BindingFlags bindingAttr, Binder binder, Type returnType, Type[] types, ParameterModifier[] modifiers) at System.Type.GetProperty(String name) at MS.Internal.ComponentModel.DependencyPropertyKind.get_IsDirect() at MS.Internal.ComponentModel.DependencyPropertyKind.get_IsAttached() at MS.Internal.ComponentModel.APCustomTypeDescriptor.GetProperties(Attribute[] attributes) at MS.Internal.ComponentModel.APCustomTypeDescriptor.GetProperties() at System.ComponentModel.TypeDescriptor.TypeDescriptionNode.DefaultExtendedTypeDescriptor.System.ComponentModel.ICustomTypeDescriptor.GetProperties() at System.ComponentModel.TypeDescriptor.GetPropertiesImpl(Object component, Attribute[] attributes, Boolean noCustomTypeDesc, Boolean noAttributes) at System.ComponentModel.TypeDescriptor.GetProperties(Object component) at MS.Internal.Model.ModelPropertyCollectionImpl.GetProperties(String propertyNameHint) at MS.Internal.Model.ModelPropertyCollectionImpl.<GetEnumerator>d__0.MoveNext() at MS.Internal.Designer.PropertyEditing.Model.ModelPropertyMerger.<GetFirstProperties>d__0.MoveNext() at MS.Internal.Designer.PropertyEditing.PropertyInspector.UpdateCategories(Selection selection) at MS.Internal.Designer.PropertyEditing.PropertyInspector.OnSelectionChangedIdle() Who know this problem? Please explain :) I have no ideas except that WPF Designer doesn't like generics. If I replace generics by Object all is OK.

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  • Determine whether a canvas has been inserted into each page

    - by Hadi Teo
    Hi, Currently i have a code which will print OMR Mark on each pages. Basically i insert a canvas into each page and subsequently an OMR Mark Line Series are inserted into the canvas. Recently i found an issue that somehow one of the canvas is placed out of a page and it appears at the previous page instead of the current page. Below is the code snippet in how i inserted canvas as well as OMR Marks into each page: ' Start Code Snippet Sub GenerateOMR() Dim ShpCanvas As Shape Dim MaxPages As Integer Dim PNo As Integer ClearOMR MaxPages = Selection.Information(wdNumberOfPagesInDocument) For PNo = 1 To MaxPages Selection.GoTo What:=wdGoToPage, Which:=wdGoToFirst, Count:=PNo, Name:="" Select Case PNo Case 1 Set ShpCanvas = ActiveDocument.Shapes.AddCanvas(0, 0.5, 600, 300) Case Else Set ShpCanvas = ActiveDocument.Shapes.AddCanvas(0, 0, 600, 300) End Select ' Add a canvas on each page With ShpCanvas .Name = "OMR_Canvas_" & CStr(PNo) .RelativeHorizontalPosition = wdRelativeHorizontalPositionPage .RelativeVerticalPosition = wdRelativeVerticalPositionPage End With ' Insert a white background rectange and remove the rectangle border line With ShpCanvas.CanvasItems.AddShape(msoShapeRectangle, 536, 0, 64, 300) .Name = "OMR_WhiteBackground_" & CStr(PNo) .Fill.ForeColor.RGB = RGB(255, 255, 255) .Line.ForeColor.RGB = RGB(255, 255, 255) End With PrintOMRPage ShpCanvas, PNo Next PNo End Sub ' End Code Snippet There is a custom method called PrintOMRPage method which is not relevant here. My question now, how do i know whether a canvas has been inserted into a page ? Basically i will loop in all the pages and check whether a canvas has been inserted into that page. Apparently i cannot find the correct way. I have tried to check using ActiveDocument.Shapes(1).Top and validate whether the Top position is a negative value. But apparently the Top position is always measured from the top of each page. Thanks for the help. hadi teo

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  • How do you jump to a particular row in a DataGridView by typing (a la Windows Explorer details view)

    - by russcollier
    I have a .NET Winforms app in C# with a DataGridView that's read-only and populated with some number of rows. I'd like to have functionality similar to Windows Explorer's (and many other applications) details view for example. I'd like the DataGridView to behave such that when it has focus if you start typing, the current row selection will jump to the row where the (string) value of cell 0 (i.e. the first column in the row) starts with the characters you typed in. For example, if I have a DataGridView with 1 column and the following rows: Bob Jane Jason John Leroy Sam If the DataGridView has focus and I hit the 'b' key on my keyboard, the selected row is now "Bob". If I quickly type in the keys 'ja', the selected row is Jane. If I quickly type in the letters 'jas', the selected row is Jane. If I hit the 'z' key, nothing is selected (since nothing starts with Z). Likewise if Jane is currently selected and I keep typing the letter 'j', the selection will cycle through to Jason, then John, then back to Jane, each time I hit the 'j' key. I've been doing some Googling (and "stackoverflowing" :-)) for awhile and cannot find any examples of this type of functionality. I have a rough idea in my head to do this via some sort of short lived timer thread, collecting the keystrokes on KeyPress events for the DataGridView, and selecting rows based on those collected keystrokes matching a Cells[0].Value.StartsWith() type of condition. But it seems like there has to be an easier way that I'm just not seeing. Any ideas would be much appreciated. Thanks!

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  • Knowing the selections made on a 'multichooser' box in a mechanical turk hit (using Command Line Too

    - by gveda
    Hi All, I am new to Amazon Mechanical Turk, and wanted to create a hit with a qualification task. I am using the command line tools interface. One of the questions in my qualification task involves users selecting a number of options. I use a 'multichooser' selection type. Now I want to grade the responses based on the selections, where each selection has a different score. So for example, s1 has a score of 5, s2 of 10, s3 of 6, and so on. If the user selects s1 and s3, he/she gets a score of 11. Unfortunately, doing something like the following does not work: <AnswerOption> <SelectionIdentifier>s1</SelectionIdentifier> <AnswerScore>5</AnswerScore> </AnswerOption> <AnswerOption> <SelectionIdentifier>s2</SelectionIdentifier> <AnswerScore>10</AnswerScore> </AnswerOption> <AnswerOption> <SelectionIdentifier>s3</SelectionIdentifier> <AnswerScore>6</AnswerScore> </AnswerOption> If I do this, when I select multiple things, I get a score of 0. If I select only one option, say s1, then I get the appropriate score. Can you please help me on how to go about this? I could ask the same question 5 times with the same options, but then users might choose the same answer multiple times - something I wish to avoid. Thanks! Gaurav

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  • Problem on "Finding cursor position" function

    - by sanceray3
    Hi all, Few days ago, I have found a solution to obtain the cursor position on a div with contentedit="true". I use the solution defined on this web site : Finding cursor position in a contenteditable div function getCursorPos() { var cursorPos; if (window.getSelection) { var selObj = window.getSelection(); var selRange = selObj.getRangeAt(0); cursorPos = findNode(selObj.anchorNode.parentNode.childNodes, selObj.anchorNode) + selObj.anchorOffset; /* FIXME the following works wrong in Opera when the document is longer than 32767 chars */ } else if (document.selection) { var range = document.selection.createRange(); var bookmark = range.getBookmark(); /* FIXME the following works wrong when the document is longer than 65535 chars */ cursorPos = bookmark.charCodeAt(2) - 11; /* Undocumented function [3] */ } return cursorPos; } function findNode(list, node) { for (var i = 0; i < list.length; i++) { if (list[i] == node) { return i; } } return -1; } It functions well, but when I use html tags inside the div the pointer doesnt show the correct position. For example if I try to find cursor position on the <strong>cat</strong> is black, the function doesn't return me the good position. But if I try on the cat is black, it functions. Any ideas how to get the position with html tags ? Thanks for your help.

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  • ASP.NET MVC 2: How to write this Linq SQL as a Dynamic Query (using strings)?

    - by Dr. Zim
    Skip to the "specific question" as needed. Some background: The scenario: I have a set of products with a "drill down" filter (Query Object) populated with DDLs. Each progressive DDL selection will further limit the product list as well as what options are left for the DDLs. For example, selecting a hammer out of tools limits the Product Sizes to only show hammer sizes. Current setup: I created a query object, sent it to a repository, and fed each option to a SQL "table valued function" where null values represent "get all products". I consider this a good effort, but far from DDD acceptable. I want to avoid any "programming" in SQL, hopefully doing everything with a repository. Comments on this topic would be appreciated. Specific question: How would I rewrite this query as a Dynamic Query? A link to something like 101 Linq Examples would be fantastic, but with a Dynamic Query scope. I really want to pass to this method the field in quotes "" for which I want a list of options and how many products have that option. (from p in db.Products group p by p.ProductSize into g select new Category { PropertyType = g.Key, Count = g.Count() }).Distinct(); Each DDL option will have "The selection (21)" where the (21) is the quantity of products that have that attribute. Upon selecting an option, all other remaining DDLs will update with the remaining options and counts.

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  • UITableView, having problems changing accessory when selected

    - by zpasternack
    I'm using a UITableView to allow selection of one (of many) items. Similar to the UI when selecting a ringtone, I want the selected item to be checked, and the others not. I would like to have the cell selected when touched, then animated back to the normal color (again, like the ringtone selection UI). A UIViewController subclass is my table's delegate and datasource (not UITableViewController, because I also have a toolbar in there). I'm setting the accessoryType of the cells in cellForRowAtIndexPath:, and updating my model when cells are selected in didSelectRowAtIndexPath:. The only way I can think of to set the selected cell to checkmark (and clear the previous one) is to call [tableView reloadData] in didSelectRowAtIndexPath:. However, when I do this, the animating of the cell deselection is weird (a white box appears where the cell's label should be). If I don't call reloadData, of course, the accessoryType won't change, so the checkmarks won't appear. I suppose I could turn the animation off, but that seems lame. I also toyed with getting and altering the cells in didSelectRowAtIndexPath:, but that's a big pain. Any ideas? Abbreviated code follows... - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell* aCell = [tableView dequeueReusableCellWithIdentifier:kImageCell]; if( aCell == nil ) { aCell = [[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:kImageCell]; } aCell.text = [imageNames objectAtIndex:[indexPath row]]; if( [indexPath row] == selectedImage ) { aCell.accessoryType = UITableViewCellAccessoryCheckmark; } else { aCell.accessoryType = UITableViewCellAccessoryNone; } return aCell; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { [tableView deselectRowAtIndexPath:indexPath animated:YES]; selectedImage = [indexPath row] [tableView reloadData]; }

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  • Does query plan optimizer works well with joined/filtered table-valued functions?

    - by smoothdeveloper
    In SQLSERVER 2005, I'm using table-valued function as a convenient way to perform arbitrary aggregation on subset data from large table (passing date range or such parameters). I'm using theses inside larger queries as joined computations and I'm wondering if the query plan optimizer work well with them in every condition or if I'm better to unnest such computation in my larger queries. Does query plan optimizer unnest table-valued functions if it make sense? If it doesn't, what do you recommend to avoid code duplication that would occur by manually unnesting them? If it does, how do you identify that from the execution plan? code sample: create table dbo.customers ( [key] uniqueidentifier , constraint pk_dbo_customers primary key ([key]) ) go /* assume large amount of data */ create table dbo.point_of_sales ( [key] uniqueidentifier , customer_key uniqueidentifier , constraint pk_dbo_point_of_sales primary key ([key]) ) go create table dbo.product_ranges ( [key] uniqueidentifier , constraint pk_dbo_product_ranges primary key ([key]) ) go create table dbo.products ( [key] uniqueidentifier , product_range_key uniqueidentifier , release_date datetime , constraint pk_dbo_products primary key ([key]) , constraint fk_dbo_products_product_range_key foreign key (product_range_key) references dbo.product_ranges ([key]) ) go . /* assume large amount of data */ create table dbo.sales_history ( [key] uniqueidentifier , product_key uniqueidentifier , point_of_sale_key uniqueidentifier , accounting_date datetime , amount money , quantity int , constraint pk_dbo_sales_history primary key ([key]) , constraint fk_dbo_sales_history_product_key foreign key (product_key) references dbo.products ([key]) , constraint fk_dbo_sales_history_point_of_sale_key foreign key (point_of_sale_key) references dbo.point_of_sales ([key]) ) go create function dbo.f_sales_history_..snip.._date_range ( @accountingdatelowerbound datetime, @accountingdateupperbound datetime ) returns table as return ( select pos.customer_key , sh.product_key , sum(sh.amount) amount , sum(sh.quantity) quantity from dbo.point_of_sales pos inner join dbo.sales_history sh on sh.point_of_sale_key = pos.[key] where sh.accounting_date between @accountingdatelowerbound and @accountingdateupperbound group by pos.customer_key , sh.product_key ) go -- TODO: insert some data -- this is a table containing a selection of product ranges declare @selectedproductranges table([key] uniqueidentifier) -- this is a table containing a selection of customers declare @selectedcustomers table([key] uniqueidentifier) declare @low datetime , @up datetime -- TODO: set top query parameters . select saleshistory.customer_key , saleshistory.product_key , saleshistory.amount , saleshistory.quantity from dbo.products p inner join @selectedproductranges productrangeselection on p.product_range_key = productrangeselection.[key] inner join @selectedcustomers customerselection on 1 = 1 inner join dbo.f_sales_history_..snip.._date_range(@low, @up) saleshistory on saleshistory.product_key = p.[key] and saleshistory.customer_key = customerselection.[key] I hope the sample makes sense. Much thanks for your help!

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  • Why does adding Crossover to my Genetic Algorithm gives me worse results?

    - by MahlerFive
    I have implemented a Genetic Algorithm to solve the Traveling Salesman Problem (TSP). When I use only mutation, I find better solutions than when I add in crossover. I know that normal crossover methods do not work for TSP, so I implemented both the Ordered Crossover and the PMX Crossover methods, and both suffer from bad results. Here are the other parameters I'm using: Mutation: Single Swap Mutation or Inverted Subsequence Mutation (as described by Tiendil here) with mutation rates tested between 1% and 25%. Selection: Roulette Wheel Selection Fitness function: 1 / distance of tour Population size: Tested 100, 200, 500, I also run the GA 5 times so that I have a variety of starting populations. Stop Condition: 2500 generations With the same dataset of 26 points, I usually get results of about 500-600 distance using purely mutation with high mutation rates. When adding crossover my results are usually in the 800 distance range. The other confusing thing is that I have also implemented a very simple Hill-Climbing algorithm to solve the problem and when I run that 1000 times (faster than running the GA 5 times) I get results around 410-450 distance, and I would expect to get better results using a GA. Any ideas as to why my GA performing worse when I add crossover? And why is it performing much worse than a simple Hill-Climb algorithm which should get stuck on local maxima as it has no way of exploring once it finds a local max?

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  • WPF - DataTemplate to show only one hierarchical level in recursive data

    - by Paull
    Hi all, I am using a tree to display my data: persons grouped by their teams. In my model a team can contain another team, so the recursion. I want do display details about the selected node of the tree using a contentpresenter. If the selection is a person, everything is fine: I can show the person name or datails without problem using a simple datatemplate. If the selection is a team I would like to display the team name followed by a list of member names. If one of these members is another team I would like to display just the team name, without recursion... My code here is wrong because it displays data in a recursive way, what is the right way of doing it? Thanks in advance for any help! best regards, Paolo <ContentPresenter Content="{Binding Path=SelectedItem, ElementName=PeopleTree}" > <ContentPresenter.Resources> <DataTemplate DataType="{x:Type my:PersonViewModel}"> <TextBlock Text="{Binding PersonName}"/> </DataTemplate> <DataTemplate DataType="{x:Type my:TeamViewModel}"> <StackPanel> <TextBlock Text="{Binding TeamName}" /> <ListBox ItemsSource="{Binding Members}" /> </StackPanel> </DataTemplate> </ContentPresenter.Resources> </ContentPresenter>

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  • Code bacteria: evolving mathematical behavior

    - by Stefano Borini
    It would not be my intention to put a link on my blog, but I don't have any other method to clarify what I really mean. The article is quite long, and it's in three parts (1,2,3), but if you are curious, it's worth the reading. A long time ago (5 years, at least) I programmed a python program which generated "mathematical bacteria". These bacteria are python objects with a simple opcode-based genetic code. You can feed them with a number and they return a number, according to the execution of their code. I generate their genetic codes at random, and apply an environmental selection to those objects producing a result similar to a predefined expected value. Then I let them duplicate, introduce mutations, and evolve them. The result is quite interesting, as their genetic code basically learns how to solve simple equations, even for values different for the training dataset. Now, this thing is just a toy. I had time to waste and I wanted to satisfy my curiosity. however, I assume that something, in terms of research, has been made... I am reinventing the wheel here, I hope. Are you aware of more serious attempts at creating in-silico bacteria like the one I programmed? Please note that this is not really "genetic algorithms". Genetic algorithms is when you use evolution/selection to improve a vector of parameters against a given scoring function. This is kind of different. I optimize the code, not the parameters, against a given scoring function.

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  • Getting the highlighted text inside selected element only.

    - by ashays
    My goal is to be able to get the highlighted text within a document, but only if that text is within a given section, and then apply a certain style to that selected text after clicking a div tag. I'll explain what I mean: So, having looked at window.getSelection() and document.selection.createRange().text, I attempted to use elmnt.getSelection() or elmnt.selection.createRange().text for some HTML element, elmnt. However, it doesn't seem to work, so that idea seems pretty null. This means I can't use this idea to determine the text that is highlighted within a given location. In case this doesn't make sense, essentially, I want html code that looks like this: <body> <div id="content">Stuff here will not be effected</div> <div id="highlightable">Stuff here can be effected when highlighted</div> <div id="morecontent">Stuff here will also not be effected</div> </body> So that whenever I've highlighted text, clicking on a specified div will apply the proper CSS. Now, on to the div tags. Basically, here's what I've got on that: $('.colorpicker').click( function(e) { console.log(getSelectedText()); } Eventually, all I want this to highlight the selected text and have the div tag change the color of the selected text to that of the respective div tag that I've selected. Neither of these seems to be working right now, and my only guess for the reason of the div tag is that it unhighlights whatever I've got selected whenever I click on the div tag. Fallbacks: If there is more than one time that 'abc' is found on the page and I highlight to color 'abc', I would like that only that copy of 'abc' be highlighted. I know this is a lot in one question, but even if I could get a little head start on this idea, my next personal project would be going a lot more smoothly. Thanks. :)

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  • Replacing text inside textarea without focus

    - by asker
    I want to replace selected text(or insert new text after cursor position if nothing is selected). The new text is entered from another textbox. I want to be able to insert new text without clicking first (focusing) in the textarea. meaning: first select text to replace inside textarea, then enter new text into the textbox and click the button. <textarea id='text' cols="40" rows="20"> </textarea> <div id="opt"> <input id="input" type="text" size="35"> <input type="button" onclick='pasteIntoInput(document.getElementById("input").value)' value="button"/> </div> function pasteIntoInput(text) { el=document.getElementById("text"); el.focus(); if (typeof el.selectionStart == "number"&& typeof el.selectionEnd == "number") { var val = el.value; var selStart = el.selectionStart; el.value = val.slice(0, selStart) + text + val.slice(el.selectionEnd); el.selectionEnd = el.selectionStart = selStart + text.length; } else if (typeof document.selection != "undefined") { var textRange = document.selection.createRange(); textRange.text = text; textRange.collapse(false); textRange.select(); } } Online example: link text

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  • Javascript: Adding selected text to an array

    - by joeybaker
    My goal: each time a user selects text, and clicks a button, that text gets added to an array. The problem: each time the button is pressed, the all objects of the array get overridden with the currently selected text. I'd really appreciate help changing the behavior so that the selected text doesn't override all previous array items. <script type="text/javascript"> var selects = new Array(); selects.push("1"); function getSelText() { var i = 0; while (i<1) { var txt = [null]; var x = 0; if (window.getSelection) { txt[x] = window.getSelection(); } else if (document.getSelection) { txt[x] = document.getSelection(); } else if (document.selection) { txt[x] = document.selection.createRange().text; } else return; selects.push(txt); x++; i++; }; document.menu.selectedtext.value = selects; } </script> <form class="menu" name="menu"> <input type="button" value="highlight" class="highlightButton" onmousedown="getSelText()"/> <textarea name="selectedtext" rows="5" cols="20"></textarea> </form> <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>

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  • Maximum number of characters using keystrokes A, Ctrl+A, Ctrl+C and Ctrl+V

    - by munda
    This is an interview question from google. I am not able to solve it by myself. Can somebody shed some light? Write a program to print the sequence of keystrokes such that it generates the maximum number of character 'A's. You are allowed to use only 4 keys: A, Ctrl+A, Ctrl+C and Ctrl+V. Only N keystrokes are allowed. All Ctrl+ characters are considered as one keystroke, so Ctrl+A is one keystroke. For example, the sequence A, Ctrl+A, Ctrl+C, Ctrl+V generates two A's in 4 keystrokes. Ctrl+A is Select All Ctrl+C is Copy Ctrl+V is Paste I did some mathematics. For any N, using x numbers of A's , one Ctrl+A, one Ctrl+C and y Ctrl+V, we can generate max ((N-1)/2)2 number of A's. For some N M, it is better to use as many Ctrl+A's, Ctrl+C and Ctrl+V sequences as it doubles the number of A's. The sequence Ctrl+A, Ctrl+V, Ctrl+C will not overwrite the existing selection. It will append the copied selection to selected one.

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  • Why does adding Crossover to my Genetic Algorithm give me worse results?

    - by MahlerFive
    I have implemented a Genetic Algorithm to solve the Traveling Salesman Problem (TSP). When I use only mutation, I find better solutions than when I add in crossover. I know that normal crossover methods do not work for TSP, so I implemented both the Ordered Crossover and the PMX Crossover methods, and both suffer from bad results. Here are the other parameters I'm using: Mutation: Single Swap Mutation or Inverted Subsequence Mutation (as described by Tiendil here) with mutation rates tested between 1% and 25%. Selection: Roulette Wheel Selection Fitness function: 1 / distance of tour Population size: Tested 100, 200, 500, I also run the GA 5 times so that I have a variety of starting populations. Stop Condition: 2500 generations With the same dataset of 26 points, I usually get results of about 500-600 distance using purely mutation with high mutation rates. When adding crossover my results are usually in the 800 distance range. The other confusing thing is that I have also implemented a very simple Hill-Climbing algorithm to solve the problem and when I run that 1000 times (faster than running the GA 5 times) I get results around 410-450 distance, and I would expect to get better results using a GA. Any ideas as to why my GA performing worse when I add crossover? And why is it performing much worse than a simple Hill-Climb algorithm which should get stuck on local maxima as it has no way of exploring once it finds a local max?

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  • Setting spinners onResume doesn't work

    - by DixieFlatline
    Hello! I want to save text from 2 edittexts(et1,et2) and selection from 3 spinners(spinnerm,spinner and spinner2) onPause and setting them back onResume. Text from edittexts is saved correctly, only spinner selection don't work as desired. My code: public void onResume(){ super.onResume(); Log.d("REZUM","notr smo"); SharedPreferences seti = getSharedPreferences( "pavzica", MODE_PRIVATE); spinnerm.setSelection(seti.getInt("m", 0)); spinner.setSelection(seti.getInt("k", 0)); spinner2.setSelection(seti.getInt("p", 0)); et1.setText(seti.getString("zade", "")); et2.setText(seti.getString("Vseb", "")); } public void onPause() { shraniPolja(); super.onPause(); } public void shraniPolja() { SharedPreferences seti = getSharedPreferences( "pavzica", MODE_PRIVATE); SharedPreferences.Editor edito = seti.edit(); edito.putString("zade", et1.getText().toString()); edito.putString("Vseb", et2.getText().toString()); edito.putInt("m", spinnerm.getSelectedItemPosition()); edito.putInt("k", spinner.getSelectedItemPosition()); edito.putInt("p", spinner2.getSelectedItemPosition()); edito.putBoolean("b", true); edito.commit(); } What am i doing wrong?

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  • Android Video Layout and backbutton to activity

    - by Marcjc
    I have an application where you can click on a button, this takes you to a new activity with four new buttons, listen, bio, ringtone, and watch. My watch button kicks off the following code: Button cmd_watchme = (Button)this.findViewById(R.id.watch); cmd_watchme.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { setContentView(R.layout.tvvideo); VideoView video=(VideoView)findViewById(R.id.VideoView); MediaController mediaController = new MediaController(andy.this); mediaController.setAnchorView(video); video.setMediaController(mediaController); video.setVideoURI(videopath); video.start(); } }); After the video is displayed I am trying to get the backbutton on the phone itself to take the user back to the four button selection activity, listen, bio, ringtone, and watch. Question is, how do i do this? I was figuring if there was a way to change the ContentView after the video is displayed back to the main one for the four button page but could not figure it out. When I press the backbutton on the device, it takes me two levels up to the main selection activity not the four button activity. I hope this was somewhat clear. Thanks for any help.

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  • Calculating a date when a date has been chosen by the number of days

    - by Andy
    I have three selection drop downs in a form comprising of day, month, year. Pretty standard. Ive omitted all the individual select options for the purposes of this question. <label for="start_date">Start Date<font class="required">*</font>:</label> <select name="place_booking[day_val]"> <select name="place_booking[month_val]"> <select name="place_booking[year_val]"> Underneath this i have a selection for the number of days the client wishes to stay at the letting. <label for="number_of_days">Number of Days<font class="required">*</font>:</label> <select name="place_booking[number_of_days]"> Underneath there is a space to display the departure date based on there two selections above. <label for="departure_date">Departure Date<font class="required">*</font>:</label> ? - this bit i would like to display the calculated date after the above is selected Any help would be grealty appreciated.

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  • Sliding & hiding multiple panels in jQuery.

    - by lloydphillips
    I have a table with multiple rows in each row is a select list and based on the selection (when the onchange event is fired) panels appear containing additional data below the row.I currently have code like this: var allPnls = '.inv-dtl-comnts-add,.inv-dtl-comnts-update'; $(document).ready(function(){ hideAll(); //select action change $(".inv-dtl-ddlaction").change(onSelectChange); $(".btn-cancel").click(function(event){ slideAll(); $(".inv-dtl-ddlaction").val('[Select an Action]'); return false; }); }); function onSelectChange(event){ //find out which select item was clicked switch($(this).val()) { case 'View/Add Comment': $(this).closest(".row").children(allPnls).slideUp("fast", function(){ $(this).closest(".row").children(".inv-dtl-comnts-add").slideToggle("fast"); }); break; case 'Change Status': $(this).closest(".row").children(allPnls).slideUp("fast", function(){ $(this).closest(".row").children(".inv-dtl-comnts-update").slideToggle("fast"); }); break; default: //code to be executed if n is different from case 1 and 2 } } function hideAll(){ $(allPnls).hide(); } function slideAll(){ $(allPnls).slideUp("fast"); } So I'm hiding all the panels when the page loads and if a panel is already open I want to slide it shut before reopening the new panel. This works with the postback. With just one panel in the selection it worked great but with two panels the sliding up happens twice (it seems to slide down unopened panels before sliding them back up again). How can I adjust this so that I can get all panels listed in the variable allPnls to slide shut ONLY if they are already open? Is there a better way of sliding the panels shut and then having a callback to have the slideToggle work? Lloyd

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  • Drupal advanced ACLs for "untrusted" administrators

    - by redShadow
    I have a multi-site Drupal-6 installation containing websites of different customers. On each site, there is an "administrator" role that includes mainly the customer's account. We want to give as many permissions as possible to this privileged user, but this could bring to security leaks using just the Drupal Core permissions management system. The main thing to avoid is the customer account being able to run PHP code on the server (that would be like being logged on the server as the www-data user.. sounds really bad). To avoid that, it is not sufficient to deny PHP code evaluation for the role. Since the administrator role must have permissions to manage users, he could also change the password of the user #1 and login in the site as superadmin. The second goal would be to deny also some "confusing" administrative pages (such as module selection) but not others (such as site informations configuration, or theme selection, etc.) I found the User One module that seems to fix the first problem, but I have no idea on how to solve the second one. I found some modules around, but no-one seems to fit.. it seems like the most ACLs are thought to protect the content, and not the site itself, as if the site administrator would always be the server owner itself..

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