Svelecte Auto-Complete Behavior
TODO: collapasable, copyable, download, etc
I am trying to use the Svelte library svelecte to have the following behavior:
- I want an auto-complete across three data sources. The third data source is dependent on the 1st choice
- If the first data source is ['a', 'b', 'bc'] and the second data source is ['=', '!=', 'startsWith']
- Then when the user clicks into the auto complete intput, the drop down should show completions for ['a', 'b', 'bc']
- If the user types 'a', then we append the second data source and the drop down completions would be 'a =', 'a !=', and 'a startsWith'
- If had instead typed 'b', then the drop down should show 'b', 'bc'
- If the user then selects 'b' we will append the second data source to the drop down, so 'b =', 'b !=', and 'b startsWith
- Assuming the user typed 'a' and then typed 'a =', we now append the third data set. We get the values for it using 'a' as an input
- Let's say the output was ['za', 'zb', 'zc']
- The autocomplete drop down will now show 'a = za', 'a = zb', 'a = zc'
- if the user types 'a = za' then that value is selected and we stop showing the autom complete. We render
a = zb
, but we put an on:click here so that if the user clicks, they are back into the editting - When goign back into editing, the svelecte input should have an inputValue of 'a = zb' so that the user doesn't have to retype thatImplementing this behavior with Svelte and the
svelecte
library requires a combination of reactive statements and event handling. Here's a step-by-step guide to achieve the desired functionality:
Setup Initial Data Sources: Define your data sources as Svelte stores or reactive variables. For example, the first and second data sources can be arrays, and the third one can be a function that returns an array based on the input.
Handle User Input: Use a reactive statement to monitor the input from the user. As the user types, filter the first data source to show matching results.
Concatenate Second Data Source: When the user selects an option from the first data source or types in a way that matches exactly one option, append the options from the second data source to the user's input.
Integrate Third Data Source: If the user's input matches the pattern of the first and second data source (e.g., 'a ='), call the function for the third data source with the appropriate input, and append these options to the dropdown.
Final Selection: Once the user selects a final option (e.g., 'a = za'), stop showing the autocomplete dropdown and render the selected value. Attach an
on:click
event to allow the user to re-edit.Re-editing: If the user clicks to edit again, set the
inputValue
of thesvelecte
component to the previously selected value, allowing them to modify their selection.
Here's a basic Svelte script outline to achieve this:
<script>
import Svelecte from 'svelecte';
let inputValue = '';
const firstDataSource = ['a', 'b', 'bc'];
const secondDataSource = ['=', '!=', 'startsWith'];
let currentOptions = firstDataSource;
function getThirdDataSource(input) {
// Implement logic to return array based on input
return ['za', 'zb', 'zc'];
}
$: {
if (firstDataSource.includes(inputValue)) {
currentOptions = secondDataSource.map(op => `${inputValue} ${op}`);
} else if (/* check if input matches pattern for second data source */) {
currentOptions = getThirdDataSource(inputValue.split(' ')[0])
.map(op => `${inputValue} ${op}`);
} else {
currentOptions = firstDataSource;
}
}
function handleSelect(value) {
inputValue = value;
// Additional logic for selection
}
function handleClick() {
// Logic to handle re-editing
}
</script>
<Svelecte bind:value={inputValue} options={currentOptions} on:select={handleSelect} />
<div on:click={handleClick}>{inputValue}</div>
This script is a basic framework and might require adjustments based on the exact behavior and requirements of your application. You'll need to refine the reactive statements and event handlers to match your specific use case.Here are the svelecte docs ```Exposed properties:
Property | Type | Default | Description |
---|---|---|---|
name | string | null |
create internal <select> element which you can use validatorAction on. Without name defined, no <select> is created |
options | array | [] |
Data array |
valueAsObject | bool | false |
Switch whether Svelecte should expects from and return to bind:value objects or primitive value (usually string, number) |
valueField | string | null |
Property to be used as value (if not specified, will be selected automatically) |
labelField | string | null |
Property shown in dropdown (if not specified, will be selected automatically) |
groupLabelField | string | label |
Property to be used as optgroup label |
groupItemsField | string | options |
Property holding optgroup option list |
disabledField | string | $disabled |
Property to check, whether given options should be disabled and unselectable |
required | bool | false |
make sense only when name is defined |
placeholder | string | Select |
Input placeholder |
searchable | bool | true |
Allow search among items by typing |
disabled | bool | false |
Disable component |
renderer | string|function | null |
dropdown and selection renderer function. More info in item rendering section |
controlItem | Component | Item |
Item component when item is selected. See Custom Items section for more details. |
dropdownItem | Component | Item |
Item component in dropdown. See Custom Items section for more details. |
highlightFirstItem | bool | true |
Automatically highlight the first item in the list when the dropdown opens |
selectOnTab | bool | string | null |
resetOnBlur | bool | true |
Control if input value should be cleared on blur |
resetOnSelect | bool | true |
Control if input value should be cleared on item selection. Note: applicable only with multiple |
clearable | bool | false |
Display ✖ icon to clear whole selection |
multiple | bool | false |
allow multiselection. Will be set automatically to true , if name property ends with [] , like tags[] |
closeAfterSelect | bool | false |
closes dropdown after selection. Setting this to true is useful for multiple select only. For single select dropdown is always closed no matter the value this property has |
max | number | 0 |
Maximum allowed items selected, applicable only for multiselect |
collapseSelection | bool | false |
collapse selection when multiple and not focused |
alwaysCollapsed | bool | false |
keep collapsed selection even when focused. Selected options are shown in dropdown on the top |
inputId | string | null |
allow targeting input using a html label. |
creatable | bool | false |
Allow creating new item(s) |
creatablePrefix | string | * |
Prefix marking new item |
allowEditing | bool | false |
When pressing Backspace switch to edit mode instead of removing newly created item. NOTE intended to be used with creatable property |
keepCreated | bool | true |
Switch whether to add newly created option to option list or not |
delimiter | string | , |
split inserted text when pasting to create multiple items |
createFilter | function | null |
Function, that transform input string to custom value. It can serve as a filter, if value is valid or not. If you want to dismiss entered value, function should return '' (empty string). By default all input string is trimmed and all multiple spaces are removed. Function notation:createFilter(inputValue: string, dropdownOptions: array): string |
createTransform | function | null |
Custom function transforming input string to option object. Default returns object with valueField and labelField properties, where labelField 's value is input string prefixed with creatablePrefix property. Function notation:createTransform(inputValue: string, creatablePrefix: string, valueField: string, labelField: string): object |
fetch | string|function | null |
Check "remote datasource" section for more details |
fetchMode | string | auto |
When set to init options are fetched only when mounted, when searching it search in downloaded dataset |
fetchCallback | function | null |
optional fetch callback |
fetchResetOnBlur | bool | true |
reset previous search results on empty input, related to resetOnBlur |
minQuery | number | 1 |
Minimal amount of characters required to perform remote request. Usable with fetch property |
lazyDropdown | bool | true |
render dropdown after first focus, not by default |
virtualList | bool | false |
Whether use virtual list for dropdown items (useful for large datasets) |
vlHeight | number | null |
Height of virtual list dropdown (if not specified, computed automatically) |
vlItemSize | number | null |
Height of one row (if not specified, computed automatically) |
searchField | string|array | null |
Specify item property that will be used to search by (if not specified all props except value prop will be used) |
sortField | string | null |
Specify sort property. If not specified, labelField will be used |
disableSifter | bool | false |
Disable Sifter filtering & sorting. Can be useful in combination with fetch , when further filtering or sorting may be undesired |
disableHighlight | bool | false |
Disable highlighting of input value in results. Can be useful with a renderer function that includes additional text or does its own highlighting |
class | string | svelecte-control |
default css class |
style | string | null |
inline style |
hasAnchor | bool | null |
internal : when passing also existing select (for CE) |
i18n | object | null |
I18n object overriding default settings |
dndzone | function | empty | Pass dndzone from svelte-dnd-action , if you want to support selection reordering. See the example REPL |
validatorAction | array | null |
Bind validator action for inner <select> element. Designed to be used with svelte-use-form . See the example REPL. For this to work, name property MUST be defined |
Emitted events:
Event | arguments | description |
---|---|---|
fetch | options | newly fetched remote options |
change | selection | selected objects. If anchor property is defined, change event is called also on it |
createoption | option | newly created option object |
blur | - | blur event |
invalidValue | invalidValue | triggered when passed value is out of provided options items. Internal (and bound, if any) value is set to null or [] if multiple |
enterKey | underlying keyDown event |
triggered when natively it would cause form submit (dropdown is closed). This gives you ability to prevent it by calling event.detail.preventDefault() |
Public API:
Name | type | arguments | description |
---|---|---|---|
focus | function | - | focus input |
getSelection | function | bool | return selection, if true is passed, only values are returns, whole objects otherwise |
setSelection | function | array | set selection programmatically |
config | property | - | context property: global common config for all instances, you can override most properties here and also some additional, mainly i18n |
addFormatter | function | - | context function: with signature (name, formatFn) you can add additional item renderers (formatters) |
Setup Data Sources and svelecte Properties: Define your data sources as reactive variables. Use the
options
property ofsvelecte
to pass the current set of options to the dropdown.Initialize State Variables: Initialize state variables to keep track of the user's input and the current stage of selection.
Update Options Dynamically: Use a reactive statement to update the
options
dynamically based on the user's input and the selection stage. This includes filtering the first data source, appending the second data source upon selection, and introducing the third data source based on the selected value.Handle Selection and Input Changes: Utilize the
change
event to update the state when the user makes a selection. Use a two-way binding on thevalue
property to keep track of the input value.Implement Editing Mode: To allow users to re-edit their selection, you can use the
focus
function from the public API ofsvelecte
and manipulate the input value accordingly.Configuring svelecte for Your Needs: Leverage properties like
searchable
,clearable
,placeholder
, andvalueAsObject
to configure the behavior and appearance of the svelecte component.
Here is a simplified Svelte script to illustrate these steps:
<script>
import Svelecte from 'svelecte';
let inputValue = '';
const firstDataSource = ['a', 'b', 'bc'];
const secondDataSource = ['=', '!=', 'startsWith'];
let currentOptions = firstDataSource;
let selectedValue = null;
function getThirdDataSource(input) {
// Logic to return array based on input
return ['za', 'zb', 'zc'];
}
$: {
if (selectedValue)```svelte
currentOptions = getThirdDataSource(selectedValue)
.map(op => `${selectedValue} = ${op}`);
else if (inputValue && firstDataSource.includes(inputValue))
currentOptions = secondDataSource.map(op => `${inputValue} ${op}`);
else
currentOptions = firstDataSource;
}
function handleSelect(event) {
selectedValue = event.detail.selection;
inputValue = selectedValue; // Update inputValue to reflect the selected option
}
function handleInputChange(event) {
inputValue = event.target.value;
selectedValue = null; // Reset selectedValue to allow new input
}
function resetInput() {
inputValue = selectedValue; // Reset input to the last selected value
}
</script>
<Svelecte
bind:value={inputValue}
{options}
on:change={handleSelect}
on:input={handleInputChange}
/>
{#if selectedValue}
<div on:click={resetInput}>
{selectedValue} (Click to edit)
</div>
{/if}
In this implementation:
- The
currentOptions
array is dynamically updated based on the user's input and selections. - The
handleSelect
function updates theselectedValue
andinputValue
when a selection is made. - The
handleInputChange
function allows the user to type and filter the options, resetting theselectedValue
to enable new input. - When a value is selected, it's displayed in a
div
element. Clicking on this element allows the user to re-edit their selection.
This is a basic implementation and might need further adjustments based on the exact behavior and requirements of your application, especially around the logic to determine when to switch between data sources.Your code has the error options not defined
Apologies for the oversight. The error is likely due to not defining the options
variable properly in the Svelte script. Let's correct the script to ensure that options
is properly defined and updated based on user interactions:
<script>
import Svelecte from 'svelecte';
let inputValue = '';
const firstDataSource = ['a', 'b', 'bc'];
const secondDataSource = ['=', '!=', 'startsWith'];
let currentOptions = firstDataSource; // Initialize with the first data source
let stage = 1; // To track the selection stage
function getThirdDataSource(input) {
// Implement logic to return array based on input
return ['za', 'zb', 'zc'];
}
$: {
if (stage === 2) {
// User has selected an option from the first data source
currentOptions = secondDataSource.map(op => `${inputValue} ${op}`);
} else if (stage === 3) {
// User has selected an option from the second data source
currentOptions = getThirdDataSource(inputValue.split(' ')[0])
.map(op => `${inputValue} ${op}`);
} else {
// Default to first data source
currentOptions = firstDataSource;
}
}
function handleSelect(event) {
inputValue = event.detail.selection;
if (stage === 1) stage = 2;
else if (stage === 2) stage = 3;
else stage = 1; // Reset to initial stage after final selection
}
function handleClick() {
// Logic to handle re-editing
stage = 1; // Reset to initial stage for re-editing
currentOptions = firstDataSource; // Reset options to first data source
}
</script>
<Svelecte bind:value={inputValue} {currentOptions} on:select={handleSelect} />
{inputValue ? <div on:click={handleClick}>{inputValue} (Click to edit)</div> : ''}
In this corrected script:
currentOptions
is used to dynamically update the options for thesvelecte
component.- The
stage
variable tracks the user's progress through the selection process. handleSelect
updates theinputValue
and thestage
.handleClick
resets thestage
andcurrentOptions
for re-editing.
This should correct the error and align with the behavior you described. Remember to adjust and test this code according to your specific application's context and requirements.Is there a well known React component library that can accomplish these requirementsFor achieving the complex autocomplete functionality you described in a React environment, you might want to consider libraries like react-select
or downshift
. These libraries provide a high level of customization and control, making them suitable for implementing advanced features like dependent data sources and dynamic option updates. Here's a brief overview of each:
React-Select:
- Customization:
react-select
offers extensive customization options for handling various use cases. It allows for custom rendering of options, control over the input value, and asynchronous loading of options. - Async Select: If your third data source is async,
react-select
provides Async components that can be helpful. - Controlled Component: You can fully control the input value and the options displayed, making it easier to implement the logic for dependent data sources and dynamic option updates.
- Creatable Select:
react-select
also offers a "Creatable" variant, allowing users to create new options on the fly, which could be useful for your scenario. - Documentation and Community: It has extensive documentation and a large community, providing various examples and solutions for complex scenarios.
- Customization:
Downshift:
- Flexibility: Downshift is not a select component itself but rather a set of primitives to build autocomplete, dropdown, or select components. This gives you more control and flexibility.
- Custom Logic: You can implement custom logic for handling user input, option selection, and dynamic updating of options. It provides the essential functionality while leaving the UI rendering and event handling up to you.
- Integration: Since Downshift is a set of building blocks, it can be integrated with other UI components or libraries to achieve the desired look and feel.
- Great for Complex Interactions: Downshift is ideal for scenarios where you need complete control over the interaction and UI elements.
To implement your specific requirements, you would need to use the state management and event handling capabilities of these libraries to dynamically update the options based on user input and selections. Both libraries are well-documented and have a large number of examples, making it easier to implement complex behaviors like the one you've described.The problem I see with Svelecte is that inputValue
is an internal writable store that is reset to '' after selection. The only way forward I see are:
- fork sveltecte and provide the capability to set input value directly
- write my own auto-complete component
Can you think of other ways forward? What do you think of these two?You've identified a key limitation with svelecte
in relation to your specific requirements. Let's consider the options you've proposed:
Forking Svelecte and Modifying it:
- Pros:
- Customization: You can modify the component to meet your exact needs.
- Control: You'll have full control over the behavior of the component.
- Cons:
- Maintenance: You'll be responsible for maintaining your fork and keeping it up-to-date with any upstream changes.
- Complexity: Depending on your familiarity with the internal workings of
svelecte
, this could be a non-trivial task.
- Pros:
Writing Your Own Auto-Complete Component:
- Pros:
- Tailored Solution: You can build a component that perfectly fits your requirements.
- Learning Opportunity: Building it from scratch can be a great learning experience.
- Cons:
- Time-Consuming: Writing a new component from scratch can be time-intensive.
- Potential for Bugs: New code means the potential for new bugs, requiring thorough testing.
- Pros:
Alternative Approaches:
Combining Svelecte with Additional Svelte Logic:
- You could potentially use
svelecte
for the basic dropdown functionality and manage the complex input and selection logic externally in your Svelte component. This would involve more intricate state management and perhaps some workarounds, but it might be less time-consuming than forking or creating a new component from scratch.
- You could potentially use
Using a Different Library:
- Explore other Svelte-compatible libraries that might offer more flexibility with input value management. However, this involves the risk of running into similar limitations or having to adapt to a different API and component behavior.
Evaluation:
- Forking Svelecte is a viable option if you're comfortable with delving into its codebase and taking on the responsibility of maintaining a fork. This approach gives you the most control but at the cost of additional complexity and maintenance work.
- Writing your own component allows for the highest degree of customization and may be the best approach if your requirements are highly specific and unlikely to be met by existing libraries. However, it's the most time-consuming and requires thorough testing.
- Combining Svelecte with additional Svelte logic could be a more balanced approach, allowing you to leverageexisting functionality while adding your specific logic externally. This might be less time-consuming than creating a component from scratch or forking, but it could also lead to more complex code.
- Using a different library might be a quicker solution if you can find one that fits your needs more closely than
svelecte
. However, this involves some research and the potential for other limitations.
Recommendation:
Given these considerations, if your requirements are complex and highly specific, writing your own component might be the best long-term solution, especially if you anticipate needing more custom features in the future. However, if you're looking for a quicker solution and are comfortable with potentially complex state management, trying to combine svelecte
with additional Svelte logic could be a good interim solution.
If you decide to write your own component or modify svelecte
, it would be beneficial to contribute your improvements back to the community, either as a pull request to the original library (in the case of a fork) or as a new open-source component. This not only benefits others who may have similar needs but also opens the door for contributions that can improve and maintain the component over time.How would you Combining Svelecte with additional Svelte logic?Combining svelecte
with additional Svelte logic for your specific use case involves managing some parts of the autocomplete behavior outside of svelecte
while utilizing its core dropdown and selection functionalities. Here's a step-by-step approach:
Step 1: Setup Data Sources
Define your data sources and any other state variables you need for tracking the user's selections and input.
<script>
let firstDataSource = ['a', 'b', 'bc'];
let secondDataSource = ['=', '!=', 'startsWith'];
let thirdDataSource = []; // Will be filled based on first choice
let currentOptions = firstDataSource; // Initial options for svelecte
let selectedValue = ''; // Tracks the final selection
let tempInputValue = ''; // Temporary input value for intermediate stages
let stage = 1; // Tracks the stage of selection
</script>
Step 2: Implement Dynamic Option Updating
Use a reactive statement to update the options shown in the dropdown based on the current stage and the user's input.
$: {
if (stage === 1) {
currentOptions = firstDataSource;
} else if (stage === 2) {
currentOptions = secondDataSource.map(op => `${tempInputValue} ${op}`);
} else if (stage === 3) {
currentOptions = thirdDataSource.map(op => `${tempInputValue} ${op}`);
}
}
Step 3: Handle Selection and Input Changes
Use event handlers to update tempInputValue
, selectedValue
, and stage
based on the user's interactions.
function handleSelect(event) {
selectedValue = event.detail.selection;
if (stage === 1) {
tempInputValue = selectedValue;
stage = 2; // Move to next stage
} else if (stage === 2) {
tempInputValue = selectedValue;
thirdDataSource = getThirdDataSource(tempInputValue.split(' ')[0]);
stage = 3; // Move to final stage
} else {
stage = 1; // Reset after final selection
}
}
function getThirdDataSource(input) {
// Logic to return array based on input
return ['za', 'zb', 'zc'];
}
Step 4: Integrate with Svelecte Component
Bind the currentOptions
to the svelecte
component and use the handleSelect
function to manage selections.
<Svelecte {currentOptions} on:select={handleSelect} />
Step 5: Implement Editing Mode
Provide a way for the user to re-edit their selection by resetting the stages and options.
function resetInput() {
stage = 1;
tempInputValue = '';
selectedValue = '';
}
{#if selectedValue}
<div on:click={resetInput}>
{selectedValue} (Click to edit)
</div>
{/if}
Additional Considerations
- You might need to handle edge cases and fine-tune the logic to match your exact requirements.
- Ensure that the
svelecte
component's properties and events are correctly used for your scenario. - This approach leverages
svelecte
for its UI components (dropdown and selection rendering) while the logic for managing options and input values is handled externally in your Svelte component.
By following these steps, you can effectively combine svelecte
with additional Svelte logic to create a more complex and interactive autocomplete component.How do you write an obsidian plugin?Writing a plugin for Obsidian, a popular knowledge base and note-taking application, involves several key steps. Obsidian plugins are written in JavaScript and utilize the Obsidian API. Here's a general overview of the process:
1. Setting Up Your Development Environment
Install Node.js: Ensure you have Node.js installed on your system, as it's required for development and testing of Obsidian plugins.
Familiarize Yourself with Obsidian's API: Review the Obsidian API documentation to understand how to interact with Obsidian's features and data.
Set Up a GitHub Account (Optional): If you plan to share your plugin with others, a GitHub account is useful for version control and distribution.
2. Creating a New Plugin
Create a New Plugin Repository: You can start by forking the Obsidian Sample Plugin repository on GitHub. This repository provides a basic structure for an Obsidian plugin.
Clone the Repository: Clone the repository to your local machine to start development.
Understand the Structure: Familiarize yourself with the structure of the sample plugin. Key files include:
main.ts
: The main file where your plugin's code will reside.manifest.json
: Contains metadata about your plugin, like the name, version, and description.styles.css
: For any custom styling your plugin requires.
3. Developing Your Plugin
Write Your Plugin Code: Use TypeScript or JavaScript to write your plugin. The
main.ts
file is where you'll implement the functionality of your plugin, utilizing Obsidian's API.Debugging and Testing: Test your plugin within Obsidian. You can load your plugin in Obsidian by enabling "Community Plugins" in the settings, then "Load unpacked plugin" and selecting your plugin's directory.
Compile Your Plugin: Use the build tools (like Webpack or Rollup) included in your cloned sample plugin to compile your TypeScript code into JavaScript.
4. Publishing Your Plugin
- Create a Release: Once your plugin is ready and tested, you
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