Utilizing Google Maps API v3 to validate HTML form inputs within an info-window, with seamless resizing capabilities

My Google Maps info window contains an HTML form with the jQuery validation plugin, but I am facing issues with error messages overflowing the info window when displayed below the form input field.

I have searched for solutions to similar problems, but none of the suggestions have provided a satisfactory fix.

Below is the code for the HTML form:

<div id="formDiv">
  <form action="addRow.php" method="post"id="htmlForm">
     <fieldset>
        <p id="contactP">
          <label for="contact">Email:</label>
          <input type="text" name="contact" id="contact"/> <br/>
        </p>
        <p id="dateP">
          <label for="datepicker">Date:</label>
          <input type="text" name="date" id="datepicker"/> <br/>
        </p>
        <p id="latP">
          <label for="lat">Latitude:</label>
          <input type="text" name="lat" id="lat" class="location"/> <br/>'+
        </p>
        <p id="lngP">
          <label for="lng">Longitude:</label>
          <input type="text" name="lng" id="lng" class="location"/> <br/>
        </p>
        <p id="descP">
          <label for="desc" id="dos">Description of Sighting:</label> <br/>
          <textarea name="desc" id="desc"></textarea><br/>
        </p>

          <input type="submit" class="button" id="submitBtn" value="Post Sighting!" onclick="postSighting();"/>'+
      <p class="clear"></p>'+
     </fieldset></form></div>

;

Below is the jQuery code:

$('#htmlForm').validate({
    rules: {
        contact: {required:true, email:true},
        date: {required:true},
        lat: {required:true},
        lng: {required:true},
        desc: {required:true},
    },
    messages: {
        desc: 'Please be descriptive!'
    },
    errorPlacement: function(error, element) {
        error.appendTo($('#' + element.attr('id') + 'P'));
        if (element.attr('id') == 'desc') {
            error.css({
                text_align: 'center',
                color: 'red',
                padding: 45,
            });
        } else {
            error.css({
                color: 'red',
                padding: 10,
                margin:0,
            })};
    }
});

Answer №1

To ensure that new content always fits into the infoWindow, which cannot exceed the map's size, follow these steps:

The problem arises when the validation plugin modifies the infoWindow's contents, causing the content_changed event not to trigger (which is essential for resizing the infoWindow).

Simply triggering the content_changed event of the infoWindow is not enough, as it will reset the contents to the current content property of the infoWindow (which remains unchanged when the plugin modifies the content).

Therefore, after the plugin modifies the markup, set the content by updating the infoWindow's content to the current subTree inside the infoWindow. This process may sound complicated but is actually straightforward:

infowindowObject.setContent(document.getElementById('formDiv'));

Although this action does not affect the DOM directly, it accomplishes the following:

  1. Sets the content property of the infoWindow to the current contents
  2. Triggers the content_changed event, allowing the infoWindow to be resized.

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