(function( $ ) {

  function checkKey(e) {
    allowEvent = false;
    allowedKeys = [
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      'ArrowDown',
      'ArrowUp',
    ];
    for (i in allowedKeys) {
      if (e.originalEvent.key == allowedKeys[i]) {
        allowEvent = true;
        break;
      }
    }
    return allowEvent;
  }
  
  $('#research_interest_keywords').tagsInput({
    unique: true,
    width: '100%',
    limit: $('#research_interest_keywords').attr('data-keyword-limit'),
    autocomplete: {
      source: ['3D Printing', '5G/6G', 'AI', 'AI For Sustainability', 'AI Hardware', 'AI/ML', 'Academic Change', 'Accessible Design', 'Acoustics', 'Acoustics Technology', 'Adaptive Computing', 'Adaptive Facades', 'Additive Manufacturing', 'Adhesion', 'Adipose Tissue Engineering', 'Adv. Composites', 'Advanced Composites', 'Advanced Contaminant Analysis', 'Advanced Manufacturing', 'Advanced Manufacturing Processes And Materials', 'Advanced Materials', 'Advanced Materials And Manufacturing', 'Aeroacoustics', 'Aerodynamics', 'Aeromechanics', 'Aerosols', 'Aerospace Engineering', 'Aerospace Systems', 'Aerothermodynamics', 'Agricultural Informatics', 'Agriculture', 'Air Treatment', 'Aircraft Design', 'Algae', 'Algorithms', 'Amino Acid', 'Analog Electronics', 'Anomaly Detection', 'Antennas', 'Antibiotic Resistance', 'Applied Data Science', 'Applied Mathematics', 'Applied Probability', 'Applied Probability And Statistics', 'Applied Probability Theory', 'Applied Software Engineering', 'Architected Materials', 'Artificial Intelligence', 'Asphalt', 'Assistive Robotics', 'Assistive Technology', 'Astrodynamics', 'Augmented And Virtual Reality', 'Automation', 'Automotive Control Systems', 'Automotive Engineering', 'Autonomous Systems', 'Autonomy', 'Axonal Growth And Regeneration', 'Ballistic/Hypervelocity Impact', 'Batteries', 'Bayesian Probability Theory', 'Bio-enabled Materials', 'Bioelectrics', 'Bioelectronics', 'Bioenergy', 'Biofuel', 'Bioheat And Mass Transfer', 'Biomanufacturing', 'Biomanufacturing And Cryopreservation', 'Biomaterials', 'Biomechanics', 'Biomedical Device', 'Biomedical Devices', 'Biomedical Imaging', 'Biopharmaceuticals', 'Bioprocess', 'Biosensors', 'Biotechnology', 'Bone Mechanics', 'Bone Mechanobiology', 'Brain Machine Interfaces', 'Bridges', 'CFD', 'CO2 Geological Storage', 'Cancer', 'Cartilage Mechanics', 'Cartilage Repair', 'Cartilage Tissue Engineering', 'Casting', 'Catalysis', 'Cell Biology', 'Ceramic Thin Films', 'Ceramic/Metal Composites', 'Ceramics', 'Change In Academic Organizations', 'Characterization', 'Chemical Engineering', 'Circuit Design', 'Circular Economy', 'Clean Energy', 'Climate Change', 'Climate Policy', 'Clinical AI', 'Cloud Computing', 'Coastal Engineering', 'Combination Treatment', 'Combustion', 'Communication System', 'Community-Engaged Projects', 'Compilers And Programming Languages', 'Compressor Aerodynamics', 'Computational Biology', 'Computational Engineering', 'Computational Fluid Dynamics', 'Computational Mechanics', 'Computational Multibody Dynamics', 'Computational Multiscale Modeling', 'Computer Architecture', 'Computer Networks', 'Computer Science', 'Computer Systems', 'Computer Vision', 'ComputerVision', 'Computing Education', 'Connected And Automated Vehicles', 'Construction Records', 'Contaminant Fate And Control', 'Continuous Manufacturing', 'Continuum And Solid Mechanics', 'Control', 'Convergent Manufacturing', 'Creativity', 'Critical Methods', 'Cryogenic', 'Cyber-Physical Systems', 'Cyber-Physical Systems (Critical Infrastructure) Security', 'Cyberphysical Integration', 'Cybersecurity', 'DNA Nanotechnology', 'Damage Detection', 'Data Analysis', 'Data Assimilation', 'Data Science', 'Data Science In Manufacturing', 'Data-Driven Modeling', 'Databases', 'Daylighting', 'Decarbonization', 'Decision Theory', 'Deep Learning', 'Defense', 'Deployable Concepts', 'Design', 'Design & Operation Of High Performance Buildings', 'Detonations', 'Diabetes And Chronic Kidney Disease', 'Diagnostic Devices', 'Diagnostics', 'Digital Agriculture', 'Digital Design', 'Digital Twin', 'Disasters', 'Disesase State Modeling', 'Disinfection', 'Disinfection By-Product Formation', 'Disinfection Byproducts', 'Distributed Computing', 'Diversity', 'Drinking Water', 'Drug Delivery', 'Drug Discovery', 'Drug Transport', 'Dry Powder Systems', 'Dyanmics/Control', 'Dynamic Behavior Of Materials', 'Dynamics/Control', 'Earthquake Engineering', 'Ecological Economics', 'Edge And Cloud Computing Based Energy Solutions', 'Edge Computing', 'Education', 'Educational Research', 'Educational Technology', 'Efficient And Adaptive Optimization', 'Electric Machines', 'Electric Power Systems', 'Electron Devices', 'Electronic & Quantum Materials', 'Electronic And Optical Devices', 'Electrophysiology', 'Embedded Sensing', 'Embedded System', 'Embedded Systems', 'Embodied Cognition', 'Empirical', 'Encapsulation', 'Energetic Materials', 'Energy Conversion', 'Energy Modeling', 'Energy Storage', 'Energy Systems', 'Engineering Design', 'Engineering Education', 'Engineering Ethics', 'Engineering Pathways', 'Engineering Practice', 'Engineering Studies', 'Entropy Materials', 'Environment', 'Environmental Fluid Mechanics', 'Environmental Injustice', 'Environmental Solutions', 'Environmentally-Friendly Working Fluids', 'Enzyme Catalysis', 'Ergonomics', 'Exoskeleton', 'Experimental Aerodynamics', 'Explosives', 'Extreme Conditions', 'FPGA', 'Fabrication', 'Faculty Development', 'Failure Analysis', 'Feminist Theory', 'Femtosecond Laser', 'Flexible Electronics', 'Flight Vehicle Design', 'Flow Control', 'Fluid Mechanics', 'Fluid Power', 'Fluids', 'Food', 'Formal Methods', 'Functional Materials', 'GHG Footprinting', 'GPS Data Analytics', 'Game Development', 'Gene Therapy', 'Geospatial Analysis', 'Global Engineering', 'Graduate', 'Great Lakes', 'H2/natural Gas/Diesel/Etc.-Fueled IC Engines', 'HVAC', 'Hardware Accelerator', 'Health', 'Healthcare Engineering', 'Hearing', 'Heat Pumps', 'Heat Transfer', 'High Speed Propulsion', 'High Voltage Batteries', 'High-Dimensional Data Analysis', 'High-Frequency Devices', 'High-speed Compressible Flow', 'High-speed Visualization', 'History Of Engineering', 'Human Centered Design', 'Human Factors', 'Human Factors Biomechanics Ergonomics Engineering', 'Human Factors Engineering', 'Human-Computer Interaction', 'Human-Machine Interaction', 'Human-Technology Interactions', 'Humanitarian', 'Hyaluronan', 'Hybrid Structures', 'Hydraulics & Pneumatics', 'Hydrogel', 'Hypersonics', 'Hypervelocity Impact', 'Image Processing', 'Image-Guided Robotics', 'ImageProcessing', 'ImageandVideoCoding', 'Imaging', 'Imaging System Design', 'Immunoengineering', 'Immunomodulation', 'Impact Science', 'Implantable Device', 'In-Space Assembly And Manufacturing', 'Inclusion', 'Indoor Environment Quality', 'Industrial Ecology', 'Industry 4.0', 'Inertial Sensors', 'Information Theory', 'Infrastructure', 'Innovative', 'Innovative Experimental Method Development', 'Instabilities', 'Instructional Design', 'Intelligent Transportation Systems', 'Inverse Problems', 'Irradiation', 'LLM', 'LLM-embodied Generative Simulation', 'Large Commercial Vehicles', 'Laser Diagnostics', 'Laser Optics', 'Laser Processing And Diagnosis', 'Laser Processing Of Materials', 'Learning With AI', 'Learning-based Control', 'Life Cycle Assessment', 'Lithium Extraction', 'Lithium Ion Batteries', 'MEMS', 'MXenes', 'Machine Learning', 'Machine Learning Applications And Data Analysis In Engineering', 'Malware Analysys', 'Manufacturing', 'Mass Timber', 'Materials Science', 'Mathematical Modeling', 'Mathematical Optimization', 'Mechanical Behavior', 'Mechanical Engineering', 'Mechanical Properties', 'Mechanics Of Materials; Damage Tolerance; Fracture And Fatigue', 'Mechanism Design', 'Mechanobiology', 'Mechatronics', 'Medical Device', 'Medical Devices', 'Medical Image Analysis', 'Medical Imaging', 'Medical Robotics', 'Membrane', 'Metabolic Diseases', 'Metabolic Engineering', 'Metabolism', 'Metal', 'Metals', 'Micro Device', 'Micro/Nanotechnology', 'Microbiology', 'Microbiome', 'Microchips', 'Microelectronics', 'Microfluidics', 'Microscopy', 'Mixing', 'Mobility And Data Science', 'Model-Based Control', 'Modeling Human Decision-Making', 'Multi-Agent Systems', 'Multi-Material Interfaces', 'Multi-Paradigm Simulations', 'Multidisciplinary Design Analysis And Optimization', 'Multifunctional Composites', 'Multifunctional Materials', 'Multifunctional/Smart Materials', 'Multimodal Learning', 'Multiobjective Optimization Under Uncertainty', 'Multiphysics Modeling', 'Nanoelectronics', 'Nanoindentation', 'Nanomanufacturing', 'Nanomaterials', 'Nanomedicine', 'Nanophotonics', 'Nanoscale', 'Nanoscale Materials', 'Nanotechnology', 'Natural Language Processing', 'Net-shape Reaction Processing', 'Network Science', 'Network Security', 'Networked Control Systems', 'Neural Circuits', 'Neural Engineering', 'Neuro-engineering', 'Neuroprosthetics', 'Neuroscience', 'Nl Query To Sql', 'Non-Cognitive And Affective Factors Related To Student Success', 'Non-Destructive Inspection/Evaluation', 'Nondestructive Evaluation', 'Nuclear', 'Nuclear Materials', 'One Health', 'Open Radio Access Networks', 'Optical And Optoelectronic Materials', 'Optical Tweezers And Optical Manipulation', 'Optics', 'Optimization', 'Organ-on-a-Chip', 'Organic Materials', 'Organoids', 'Osteoarthritis', 'Oxidation', 'PFAS', 'Parallel Programming', 'Particles And Powders', 'Patient-Oriented', 'Pavement Asset Management', 'Pavement Recycling', 'Pavements', 'Pedagogical Innovation', 'Pharmaceutical Engineering', 'Pharmaceuticals', 'Photonics', 'Photothermal Conversion And Applications', 'Physical And Chemical Processes', 'Physics-based Modeling', 'Physiological Sensing', 'Plants', 'Plasma Physics', 'Plasmonics And Photonics', 'Point Of Care', 'Point-Of-Need', 'Polymers', 'Powder Metallurgy', 'Power Systems', 'Proactive Highway Maintenance', 'Problem Based Learning', 'Process Control', 'Process Intensification', 'Process Systems Engineering', 'Processing Pharma & Food Materials', 'Programmable Structures', 'Propellants', 'Propulsion', 'Prosthetics', 'Protein & Cell Engineering', 'Protein Engineering', 'Public Health', 'Pulsed Power', 'Pyrotechnics', 'Qualitative Methods', 'Quantum Algorithms', 'Quantum Computing', 'Quantum Sensing', 'Quantum Simulation', 'RF Electronics', 'RTL Design', 'Race Theory', 'Radiation Hardening Of Electronics', 'Railroads', 'Random Graphs', 'Rare Disease', 'Reaction Kinetics And Mechanisms', 'Real-Time Shop Floor Control Via Digital-Twin', 'Reconfigurable/Smart Systems', 'Recycling', 'Rehabilitation Engineering', 'Rehabilitative Technology', 'Reinforcement Learning', 'Reliability', 'Remediation', 'Renewable Energy', 'Reservoir Characterization And Evaluation', 'Reverse Engineering', 'Roadway Electrification', 'Robotic Manipulation', 'Robotics', 'Robotics Integration', 'Robust Optimal Control', 'Rocket Propulsion', 'Roller Compaction', 'Rotating Detonation', 'Rovers And Robotics', 'Rural Wireless Telecommunications', 'STEM Education', 'Safety', 'Safety Engineering', 'Satellite GNC', 'Satellites', 'Scholarship Of Teaching And Learning', 'Scientific Machine Learning', 'Self-Regulated Learning', 'Semiconductor Devices', 'Semiconductors', 'Sensing', 'Sensors', 'Separations', 'Sequential Decision-Making', 'Signal Processing', 'Simulation Methodology', 'SmallSats', 'Smart Grids', 'Smart Operations And Systems', 'Smart Structures', 'Smart Textiles', 'SmartHealth', 'Socio-Technical Transitions', 'Soft Materials', 'Soft Matter', 'Soft Robotics', 'Software', 'Software Design And Maintenance', 'Software Engineering', 'Software Verification', 'Solid Mechanics', 'Solid Particle Erosion', 'Space', 'Space Domain Awareness', 'Space Habitats And Decision Making', 'Space Mission Design', 'Space Surveillance', 'Space Systems', 'Space Trajectory Optimization', 'Spacecraft', 'Spacecraft Autonomy', 'Spacecraft Guidance Navigation And Control (GNC)', 'Spectroscopy', 'Spinal Cord Injury', 'Stem Cells', 'Stochastic Approximation', 'Stochastic Optimization', 'Stochastic Processes', 'Stretchable Electronics', 'Structural Control', 'Structural Dynamics', 'Structural Health Monitoring', 'Structures', 'Supercomputers', 'Supply Chain Resilience', 'Surface Composition And Interactions', 'Surface Science', 'Surgery', 'Surgical Data Science', 'Surgical Glue/Adhesive', 'Surgical Robotics', 'Surrogate Methods', 'Sustainability', 'Sustainable Chemistry', 'Sustainable Electronics', 'Sustainable Energy', 'Sustainable Transportation', 'Synchrotron X-rays', 'Synthetic Biology', 'System Performance', 'Systems And Control', 'Systems Engineering', 'Systems Modeling', 'Systems Of Systems/Complexity', 'TEM', 'Tactile Sensing', 'Teaching And Learning', 'Teamwork', 'Technoeconomic Analysis', 'Technology Tools For Education', 'Test Engineering', 'Theory Methods And Algorithms', 'Theory Of Machine Learning', 'Therapeutics & Drug Delivery', 'Thermal', 'Thermal Science', 'Thermal Systems', 'Thermofluids', 'Thin Film', 'Thin Film Epitaxy', 'Thin Films', 'Tissue Engineering', 'Trajectory Optimizaiton', 'Translational Medicine', 'Transport', 'Transportation', 'Transportation PMO', 'Tribology', 'Trustworthy AI', 'Turbines', 'Turbomachinery', 'Turbulence Modeling', 'Turbulence Simulation', 'Turbulent Reactive Flows', 'Ultra-high-temperature Materials', 'Ultraviolet Radiation', 'Uncertainty Quantification', 'Urban Sustainability', 'Urban Sustainability And Equity', 'Usability', 'VLSI Circuits', 'Vehicle Automation & Driver Assistance Systems', 'Vehicle Control Systems', 'Veterinary Medicine', 'Vibration / Structural Dynamics', 'Virtual Twins', 'Virtual/Mixed/Augmented Reality', 'Vulnerability Discovery', 'Waste Valorization', 'Wastewater Treatment', 'Water', 'Water Economy', 'Water Engineering', 'Water Quality', 'Water Reuse', 'Water Treatment', 'Water Treatment And Reuse', 'Wave Propagation And Metamaterials', 'Wearable Biomedical Devices', 'Wireless Communications/Networking', 'Workforce Development', 'X-Ray Microtomography', 'bioMEMS'],
    },
    placeholder: "Return or comma to add.",
    interactive: true,
    removeWithBackspace: true,
  });
  
  // toggleSubmit and the jQuery .each() below it looks for textareas or 
  //  inputs with a class like 'wordcount-20-100'.
  // The first number in the class name is the minimum, the second (optional)
  // number is a maximum.
  // If such a field doesn't have a wordcount in the allowed range,
  // any elements of type="submit" are disabled.

  function toggleSubmit() {
    var errors = $('.wordcount-error');
    if ( errors.length > 0 ) {
      $('input[type=submit]').attr('disabled','disabled');
    } else {
      $('input[type=submit]').removeAttr('disabled');
    }
  }

  $( "input[class^='wordcount'], textarea[class^='wordcount']").each( function() {
    var minWords = 0;
    var maxWords = 0;
    const re = /wordcount-\d+-\d+/;
    var params = $(this).attr('class').match(re)[0].split('-');

    if ( params.length > 2 ) {
      minWords = parseInt(params[1]);
      maxWords = parseInt(params[2]);
    } else {
      minWords = parseInt(params[1]);
    }

    var startingWords = 0;
    var startingBounds = $(this).val().match(/\b/g);

    if(startingBounds) {
      startingWords = startingBounds.length/2;
    }

    if( minWords > 0 && startingWords < minWords ) {
      $(this).after('<div class="wordcount alert"><strong>'+startingWords+'</strong> words (<span>'+minWords+' required</span>)</div>');
      $(this).siblings('.wordcount').addClass('alert-danger').addClass('wordcount-error');
    } else if ( maxWords != 0 && (startingWords >= minWords && startingWords >= maxWords - 10 && startingWords <= maxWords) ) {
      $(this).after('<div class="wordcount alert" style="display: none"><strong>'+startingWords+'</strong> words (<span>maximum: '+maxWords+'</span>)</div>');
      $(this).siblings('.wordcount').addClass('alert-warning').removeClass('wordcount-error');
    } else if ( maxWords != 0 && startingWords > maxWords ) {
      $(this).after('<div class="wordcount alert"><strong>'+startingWords+'</strong> words (<span>maximum: '+maxWords+'</span>)</div>');
      $(this).siblings('.wordcount').addClass('alert-danger').addClass('wordcount-error');
    } else {
      $(this).after('<div class="wordcount alert" style="display: none"><strong></strong> words (<span></span>)</div>');
    }

    $(this).bind('keyup click blur focus change paste', function() {
      
      var $wordcount = $(this).siblings('.wordcount');
      var numWords = 0;
      var boundaries = $(this).val().match(/\b/g);

      if(boundaries) {
        numWords = boundaries.length/2;
      }

      $wordcount.children('strong').text(numWords);

      if( (minWords != 0 && numWords < minWords) || (maxWords != 0 && numWords > maxWords) ) {
        $wordcount.removeClass('alert-warning').addClass('alert-danger').addClass('wordcount-error');
        if (numWords < minWords ) {
          $wordcount.children('span').text(minWords+' required');
        }
        else if (numWords > maxWords ) {
          $wordcount.children('span').text('maximum: '+maxWords);
        }
        $wordcount.show();
      } else {
        $wordcount.removeClass('alert-danger').removeClass('wordcount-error');
        if ( maxWords > 0 && (numWords >= minWords && numWords >= maxWords - 20 && numWords <= maxWords) ) {
          $wordcount.children('span').text('maximum: '+maxWords);
          $wordcount.addClass('alert-warning');
          $wordcount.show();
        } else {
          $wordcount.removeClass('alert-warning').hide();
        }
      }
      toggleSubmit();
    });

  });

  toggleSubmit();
  
})( jQuery );