dynamic-ui | 易学教程

Need help in an algorithm for Shiny dynamic UI with multiple interactions

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问题 My Shiny Algorithm (app.R code at the bottom): Asks user to upload a file Gives dropdown field with options "None","Country","State","City" When "None" is selected, only textoutput should appear When "Country" is selected, only country filter should appear When "State" is selected, both country and state filters should appear when "City" is selected, both country and city filters should appear and any existing state filter from previous selections should disappear What I did in the code :

Angular 4 Dynamic component loading & emitting data to parent component

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问题 I am on process of creating poc for dynamic form generation using custom components. i have succeeded upto some extent, where i can create form using set of dynamic components according to a json array. Now i am stuck in one instance where i just need to get output or rather the data out of these components ones the user have update the relevant inputs. I had a look at the @output decorator and the eventEmitter yet i couldn't get a proper solution out of it. Much appreciate if any one in the

Dynamic UI with sliding menu and actionbarsherlock

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问题 Trying to achieve a dynamic UI with facebook like sliding menu and actionbarsherlock .First i have look into android documentation which introduce fragment to handle dynamic button. But with no luck and a week time , i still can't get it to work anyhow , i guess is my misunderstand on android concept.The slidingbar and actionbarsherlock work without any problem. I have a HomeScreen.java which contain all my menu and presetation stage and so far i have created a pagerAdapter1.java that extends

Add views( buttons, labels, etc ) to a dynamic fragment without using any ressource xml

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问题 First of all I would like to say, that I want to say "Hello in here". Requirements: I should make it possible to create a client application which gets metadata about controls from a database. This application should be able to switch from one view (with subviews, like buttons for example ) to another view. Status: I created a relatively huge development oo model, using interfaces, and subclasses (of button, for example), which all implement special own interfaces in order to react properly

Getting file path from Shiny UI (Not just directory) using browse button without uploading the file

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I need to deal with a huge file (>500mb) in R. So instead of loading such heavy file in R environment, I process the file in chunks of specific number of rows and finally get the aggregate values. I need user to specify the file (using some kind of browse functionality) so that I can feed the file path to my algorithm fileConnection <-file( "../output/name.txt", open="w") Is there any way to get only file path from Shiny UI based on the address specified by user? I tried ShinyFiles package, but it gives only directory to choose, not file. Thank you guys! This functionality is available in the

How to make the value of one select box drive the options of a second select box

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I want to make an HTML form with 2 select boxes. The selected option in the first select box should drive the options in the second select box. I would like to solve this dynamically on the client (using javascript or jQuery) rather than having to submit data to the server. For example, let's say I have the following Menu Categories and Menu Items : Sandwiches Turkey Ham Bacon Sides Mac 'n Cheese Mashed Potatoes Drinks Coca Cola Sprite Sweetwater 420 I would have two select boxes, named Menu Category and Items , respectively. When the user selects Sandwiches in the Menu Category box, the

How to make the value of one select box drive the options of a second select box

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问题 I want to make an HTML form with 2 select boxes. The selected option in the first select box should drive the options in the second select box. I would like to solve this dynamically on the client (using javascript or jQuery) rather than having to submit data to the server. For example, let's say I have the following Menu Categories and Menu Items : Sandwiches Turkey Ham Bacon Sides Mac 'n Cheese Mashed Potatoes Drinks Coca Cola Sprite Sweetwater 420 I would have two select boxes, named Menu