# Angular Ladda module

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This is a module for Angular 2+ that implements [Ladda](https://github.com/hakimel/Ladda).

<a href="http://lab.hakim.se/ladda/" target_='blank'>Check out Ladda's demo</a>

## Installation

- run `npm install angular2-ladda`

- link Ladda's stylesheets to your document - you can find it in /node_modules/ladda/, e.g. add this in your html-document:

```html
<link rel="stylesheet" href="node_modules/ladda/dist/ladda.min.css">
```

- import `LaddaModule` in your app's main module `app.module.ts`, e.g.:

```typescript
// other imports
// ...
import { LaddaModule } from 'angular2-ladda';
// ...

@NgModule({
    imports: [
        // other imports
        // ...
        LaddaModule,
        // ...
    ]
});
```

Ladda defaults can be configured as follows:

```typescript
// other imports
// ...
import { LaddaModule } from 'angular2-ladda';
// ...

@NgModule({
    imports: [
        // other imports
        // ...
        LaddaModule.forRoot({
            style: "contract",
            spinnerSize: 40,
            spinnerColor: "red",
            spinnerLines: 12
        }),
        // ...
    ]
});
```

## Usage

Add `[ladda]="isLoading"` to a button tag in template, e.g.:

```html
<button [ladda]="isLoading">Save</button>
```

In the component the value of `isLoading` can be toggled to show/hide Ladda's spinner:

```typescript
import { Component } from '@angular/core';

@Component({
    template: `
        <h1>Home Component</h1>
        <button (click)="toggleLoading()">Toggle Ladda in button below</button>
        <hr>
        <button [ladda]="isLoading">Save</button>
    `
})
export class HomeComponent {
    // trigger-variable for Ladda
    isLoading: boolean = false;
    
    toggleLoading() {
        this.isLoading = !this.isLoading;
    }
}
```

Buttons accept the following attributes:

- data-style: one of the button styles, full list in [demo](http://lab.hakim.se/ladda/)
- data-spinner-size: pixel dimensions of spinner, defaults to dynamic size based on the button height
- data-spinner-color: hex code or any named CSS color
- data-spinner-lines: the number of lines for the spinner, defaults to 12

### Progress

Loading progress can be shown by setting the bound value to a number (between 0 and 1) rather than `true`.

For example:

```typescript
import { Component } from '@angular/core';

@Component({
    template: `
        <h1>Home Component</h1>
        <button [ladda]="progress" (click)="startLoading()">Click to show progress</button>
    `
})
export class HomeComponent {
    progress: boolean | number = false;
    
    startLoading() {
        this.progress = 0; // starts spinner

        setTimeout(() => {
            this.progress = 0.5; // sets progress bar to 50%

            setTimeout(() => {
                this.progress = 1; // sets progress bar to 100%

                setTimeout(() => {
                    this.progress = false; // stops spinner
                }, 200);
            }, 500);
        }, 400);
    }
}
```

## Feedback

Please [leave your feedback](https://github.com/moff/angular2-ladda/issues) if you notice any issues or have a feature request.

## License

The repository code is open-source software licensed under the [MIT license](http://opensource.org/licenses/MIT).