Custom Floor Selector

To implement a custom floor selector, we expect you to already have completed the Getting Started Tutorial.

This guide will walk you through the process of implementing a custom floor selector using the MapsIndoors JavaScript SDK. The custom floor selector provides a more flexible and visually appealing way to switch between floors in your MapsIndoors-enabled application.

Prerequisites

Before you begin, make sure you have completed the getting started tutorial for the MapsIndoors JavaScript SDK. You should have a basic MapsIndoors map set up in your project.

Implementation

Step 1: Create the CustomFloorSelector Class

First, we'll create a CustomFloorSelector class that will handle the creation and management of our custom floor selector.

class CustomFloorSelector {
    constructor(mapsIndoorsInstance) {
        this.mapsIndoors = mapsIndoorsInstance;
        this.element = this.createSelectorElement();
        this.floors = {};
    }

    createSelectorElement() {
        const container = document.createElement('div');
        container.style.cssText = `
            position: absolute;
            top: 20px;
            right: 20px;
            background: rgba(30, 30, 30, 0.8);
            padding: 10px;
            border-radius: 15px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            display: flex;
            flex-direction: column;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.3s ease;
        `;
        return container;
    }

    // ... (other methods will be added here)
}

Step 2: Implement Floor Management Methods

Add methods to handle showing, hiding, and updating the floor selector:

class CustomFloorSelector {
    // ... (previous code)

    onShow() {
        this.element.style.display = 'flex';
        this.updateFloorButtons();
    }

    onHide() {
        this.element.style.display = 'none';
    }

    updateFloors(floors) {
        if (floors) {
            this.floors = Object.entries(floors).reduce((acc, [index, floorInfo]) => {
                acc[index] = floorInfo.name || `Floor ${index}`;
                return acc;
            }, {});
        } else {
            this.floors = {};
        }
        this.updateFloorButtons();
    }

    updateWithCurrentBuilding() {
        const currentBuilding = this.mapsIndoors.getBuilding();
        if (currentBuilding) {
            this.updateFloors(currentBuilding.floors);
        } else {
            this.updateFloors(null);
        }
    }
}

Step 3: Implement Floor Button Creation and Updating

Add methods to create and update the floor buttons:

class CustomFloorSelector {
    // ... (previous code)

    updateFloorButtons() {
        this.element.innerHTML = ''; // Clear existing buttons
        const currentFloor = this.mapsIndoors.getFloor();

        if (Object.keys(this.floors).length === 0) {
            const noFloorsMessage = document.createElement('div');
            noFloorsMessage.textContent = 'No floors available';
            noFloorsMessage.style.cssText = `
                color: #DDD;
                font-family: 'Arial', sans-serif;
                font-size: 14px;
                padding: 10px;
            `;
            this.element.appendChild(noFloorsMessage);
            return;
        }

        // Sort floor indices in descending order
        const sortedFloors = Object.entries(this.floors)
            .sort(([a], [b]) => Number(b) - Number(a));

        sortedFloors.forEach(([floorIndex, floorName]) => {
            const button = document.createElement('button');
            button.textContent = floorName;
            button.style.cssText = `
                margin: 5px 0;
                padding: 10px 20px;
                border: none;
                background-color: ${floorIndex === currentFloor ? 'rgba(200, 160, 40, 0.8)' : 'rgba(60, 60, 60, 0.6)'};
                color: ${floorIndex === currentFloor ? '#FFF' : '#CCC'};
                cursor: pointer;
                font-family: 'Arial', sans-serif;
                font-size: 16px;
                font-weight: bold;
                border-radius: 10px;
                transition: all 0.2s ease;
                text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
                outline: none;
            `;
            button.onmouseover = () => {
                if (floorIndex !== currentFloor) {
                    button.style.backgroundColor = 'rgba(80, 80, 80, 0.8)';
                    button.style.color = '#FFF';
                }
            };
            button.onmouseout = () => {
                if (floorIndex !== currentFloor) {
                    button.style.backgroundColor = 'rgba(60, 60, 60, 0.6)';
                    button.style.color = '#CCC';
                }
            };
            button.onclick = () => this.changeFloor(floorIndex);
            this.element.appendChild(button);
        });
    }

    changeFloor(floorIndex) {
        this.mapsIndoors.setFloor(floorIndex);
        this.updateFloorButtons();
    }
}

Step 4: Initialize MapsIndoors and CustomFloorSelector

Now, let's initialize MapsIndoors and our custom floor selector:

//Previous code from Getting Started Guide

// Initialize CustomFloorSelector
const customFloorSelector = new CustomFloorSelector(mapsIndoorsInstance);
document.body.appendChild(customFloorSelector.element);

Step 5: Set Up Event Listeners

Finally, set up event listeners to update the floor selector when necessary:

// Set up event listeners for MapsIndoors
mapsIndoorsInstance.addListener('ready', () => {
    customFloorSelector.onShow();
    customFloorSelector.updateWithCurrentBuilding();
});

mapsIndoorsInstance.addListener('floor_changed', () => {
    customFloorSelector.updateFloorButtons();
});

mapsIndoorsInstance.addListener('building_changed', () => {
    customFloorSelector.updateWithCurrentBuilding();
});

// Log any MapsIndoors errors
mapsIndoorsInstance.addListener('error', (error) => {
    console.error("MapsIndoors error:", error);
});

Customization

You can customize the appearance of the floor selector by modifying the CSS styles in the createSelectorElement and updateFloorButtons methods. Adjust colors, fonts, sizes, and positioning to match your application's design.