Issue #1921872 by sydneyshan: Added Find address on map button.

location_gmap_find_address/location_gmap_find_address.info

+name = Location + Gmap 'Find Address' button
+description = "Adds a 'Find Address' button to all location fields that use gmap"
+version = 7.x-1.2
+core = 7.x
+dependencies[] = location
+dependencies[] = gmap

location_gmap_find_address/location_gmap_find_address.js

+(function ($) {
+  Drupal.behaviors.mjh_views_alter = {
+    attach: function(){
+
+      $("button.location-gmap-find-address-button").click(function(e){    
+        e.preventDefault();
+        var address_parts = new Array();
+        $("fieldset#edit-" + $(this).val() + " .form-item input[type=text]," + 
+          "fieldset#edit-" + $(this).val() + " .form-item select > option:selected").each(function(){
+            if (!$(this).hasClass('gmap-control') && $(this).val() != '') {
+              if($(this).is('option')) {
+                address_parts.push($(this).text());
+              } else {
+                address_parts.push($(this).val());
+              }
+            }
+          });
+
+        var address_string = address_parts.join(', ');
+        var gmap_id = $("fieldset#edit-" + $(this).val() + " .gmap-map").attr('id');
+        if (google.maps.version !== 'undefined') { // assume Google Maps API v3 as API v2 did not have this variable
+          var geocoder = new google.maps.Geocoder();
+          geocoder.geocode({'address': address_string}, function (results, status) {
+            if (status == google.maps.GeocoderStatus.OK) {
+              var m = Drupal.gmap.getMap(gmap_id);
+              m.locpick_coord = results[0].geometry.location;
+              m.change('locpickchange');
+              m.map.setCenter(results[0].geometry.location);
+              m.map.setZoom(14);
+            }
+            else {
+              alert(Drupal.t("Your address was not found."));
+            }
+          });
+        } 
+        else {
+          var geocoder = new GClientGeocoder();
+          geocoder.reset(); // Clear the client-side cache
+          geocoder.getLatLng(address_string, function(point){
+            if (!point){
+              alert(Drupal.t("Your address was not found."));
+            }
+            else {
+              var m = Drupal.gmap.getMap(gmap_id);
+              m.locpick_coord = point;
+              m.change('locpickchange');
+              m.map.setCenter(point, 14);
+              
+            }
+          });
+        }
+
+      });
+    
+  }
+
+}
+})(jQuery);
+

location_gmap_find_address/location_gmap_find_address.module

+<?php
+
+/**
+ * hook_form_alter() override
+ */
+function location_gmap_find_address_form_alter(&$form, &$form_state, $form_id) {
+  if (isset($form['#node_edit_form']) && $form['#node_edit_form'] && variable_get('location_usegmap', 0)) {
+    $fields = field_info_instances($form['#entity_type'], $form['#bundle']);
+    $form['#location_gmap_find_address_fields'] = array();
+    foreach($fields as $field_name => $field) {
+      if ($field['widget']['type'] == 'location') {
+        $form['#location_gmap_find_address_fields'][] = $field_name;
+      }
+    }
+    if (count($form['#location_gmap_find_address_fields'])) {
+      $form["#after_build"][] = "location_gmap_find_address_after_build";
+    }
+  }
+
+}
+
+/**
+ * After build event for this form
+ */
+function location_gmap_find_address_after_build($form, &$form_state) {
+  
+  foreach ($form['#location_gmap_find_address_fields'] as $field_name) {
+    $field_instance_count = $form[$field_name]['und']['#max_delta'];
+    for ($i = 0; $i <= $field_instance_count; $i++) {
+      if(isset($form[$field_name]['und'][$i]['locpick'])) {
+        $form[$field_name]['und'][$i]['locpick']["#prefix"] = '<div class="location-gmap-find-address-button-wrapper"><button type="button" class="location-gmap-find-address-button" value="' . str_replace('_', '-', $field_name) . '-und-' . $i . '">' . t('Find Address on Map') . '</button></div>';
+      }
+    }
+  }
+  drupal_add_js(drupal_get_path("module", "location_gmap_find_address") . "/location_gmap_find_address.js");
+  
+  return $form;
+}