google地图 自定义infowindow infobox.js 插件

/**
* @name InfoBox
* @version 1.1.9 [October 2, 2011]
* @author Gary Little (inspired by proof-of-concept code from Pamela Fox of Google)
* @copyright Copyright 2010 Gary Little [gary at luxcentral.com]
* @fileoverview InfoBox extends the Google Maps JavaScript API V3 OverlayView class.
*

* An InfoBox behaves like a google.maps.InfoWindow, but it supports several
* additional properties for advanced styling. An InfoBox can also be used as a map label.
*

* An InfoBox also fires the same events as a google.maps.InfoWindow.
*

* Browsers tested:
*

* Mac – Safari (4.0.4), Firefox (3.6), Opera (10.10), Chrome (4.0.249.43), OmniWeb (5.10.1)
*
* Win – Safari, Firefox, Opera, Chrome (3.0.195.38), Internet Explorer (8.0.6001.18702)
*
* iPod Touch/iPhone – Safari (3.1.2)
*/

/*!
*
* Licensed under the Apache License, Version 2.0 (the “License”);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an “AS IS” BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

/jslint browser:true /
/global google /

/**
* @name InfoBoxOptions
* @class This class represents the optional parameter passed to the {@link InfoBox} constructor.
* @property {string|Node} content The content of the InfoBox (plain text or an HTML DOM node).
* @property {boolean} disableAutoPan Disable auto-pan on open (default is false).
* @property {number} maxWidth The maximum width (in pixels) of the InfoBox. Set to 0 if no maximum.
* @property {Size} pixelOffset The offset (in pixels) from the top left corner of the InfoBox
* (or the bottom left corner if the alignBottom property is true)
* to the map pixel corresponding to position.
* @property {LatLng} position The geographic location at which to display the InfoBox.
* @property {number} zIndex The CSS z-index style value for the InfoBox.
* Note: This value overrides a zIndex setting specified in the boxStyle property.
* @property {string} boxClass The name of the CSS class defining the styles for the InfoBox container.
* The default name is infoBox.
* @property {Object} [boxStyle] An object literal whose properties define specific CSS
* style values to be applied to the InfoBox. Style values defined here override those that may
* be defined in the boxClass style sheet. If this property is changed after the
* InfoBox has been created, all previously set styles (except those defined in the style sheet)
* are removed from the InfoBox before the new style values are applied.
* @property {string} closeBoxMargin The CSS margin style value for the close box.
* The default is “2px” (a 2-pixel margin on all sides).
* @property {string} closeBoxURL The URL of the image representing the close box.
* Note: The default is the URL for Google’s standard close box.
* Set this property to “” if no close box is required.
* @property {Size} infoBoxClearance Minimum offset (in pixels) from the InfoBox to the
* map edge after an auto-pan.
* @property {boolean} isHidden Hide the InfoBox on open (default is false).
* @property {boolean} alignBottom Align the bottom left corner of the InfoBox to the position
* location (default is false which means that the top left corner of the InfoBox is aligned).
* @property {string} pane The pane where the InfoBox is to appear (default is “floatPane”).
* Set the pane to “mapPane” if the InfoBox is being used as a map label.
* Valid pane names are the property names for the google.maps.MapPanes object.
* @property {boolean} enableEventPropagation Propagate mousedown, click, dblclick,
* and contextmenu events in the InfoBox (default is false to mimic the behavior
* of a google.maps.InfoWindow). Set this property to true if the InfoBox
* is being used as a map label. iPhone note: This property setting has no effect; events are
* always propagated.
*/

/**
* Creates an InfoBox with the options specified in {@link InfoBoxOptions}.
* Call InfoBox.open to add the box to the map.
* @constructor
* @param {InfoBoxOptions} [opt_opts]
*/
function InfoBox(opt_opts) {

opt_opts = opt_opts || {};

google.maps.OverlayView.apply(this, arguments);

// Standard options (in common with google.maps.InfoWindow):
//
this.content_ = opt_opts.content || “”;
this.disableAutoPan_ = opt_opts.disableAutoPan || false;
this.maxWidth_ = opt_opts.maxWidth || 0;
this.pixelOffset_ = opt_opts.pixelOffset || new google.maps.Size(0, 0);
this.position_ = opt_opts.position || new google.maps.LatLng(0, 0);
this.zIndex_ = opt_opts.zIndex || null;

// Additional options (unique to InfoBox):
//
this.boxClass_ = opt_opts.boxClass || “infoBox”;
this.boxStyle_ = opt_opts.boxStyle || {};
this.closeBoxMargin_ = opt_opts.closeBoxMargin || “2px”;
this.closeBoxURL_ = opt_opts.closeBoxURL || “http://www.google.com/intl/en_us/mapfiles/close.gif“;
if (opt_opts.closeBoxURL === “”) {
this.closeBoxURL_ = “”;
}
this.infoBoxClearance_ = opt_opts.infoBoxClearance || new google.maps.Size(1, 1);
this.isHidden_ = opt_opts.isHidden || false;
this.alignBottom_ = opt_opts.alignBottom || false;
this.pane_ = opt_opts.pane || “floatPane”;
this.enableEventPropagation_ = opt_opts.enableEventPropagation || false;

this.div_ = null;
this.closeListener_ = null;
this.eventListener1_ = null;
this.eventListener2_ = null;
this.eventListener3_ = null;
this.moveListener_ = null;
this.contextListener_ = null;
this.fixedWidthSet_ = null;
}

/* InfoBox extends OverlayView in the Google Maps API v3.
*/
InfoBox.prototype = new google.maps.OverlayView();

/**
* Creates the DIV representing the InfoBox.
* @private
*/
InfoBox.prototype.createInfoBoxDiv_ = function () {

var bw;
var me = this;

// This handler prevents an event in the InfoBox from being passed on to the map.
//
var cancelHandler = function (e) {
e.cancelBubble = true;

if (e.stopPropagation) {  e.stopPropagation();}

};

// This handler ignores the current event in the InfoBox and conditionally prevents
// the event from being passed on to the map. It is used for the contextmenu event.
//
var ignoreHandler = function (e) {

e.returnValue = false;if (e.preventDefault) {  e.preventDefault();}if (!me.enableEventPropagation_) {  cancelHandler(e);}

};

if (!this.div_) {

this.div_ = document.createElement("div");this.setBoxStyle_();if (typeof this.content_.nodeType === "undefined") {  this.div_.innerHTML = this.getCloseBoxImg_() + this.content_;} else {  this.div_.innerHTML = this.getCloseBoxImg_();  this.div_.appendChild(this.content_);}// Add the InfoBox DIV to the DOMthis.getPanes()[this.pane_].appendChild(this.div_);this.addClickHandler_();if (this.div_.style.width) {  this.fixedWidthSet_ = true;} else {  if (this.maxWidth_ !== 0 && this.div_.offsetWidth > this.maxWidth_) {    this.div_.style.width = this.maxWidth_;    this.div_.style.overflow = "auto";    this.fixedWidthSet_ = true;  } else { // The following code is needed to overcome problems with MSIE    bw = this.getBoxWidths_();    this.div_.style.width = (this.div_.offsetWidth - bw.left - bw.right) + "px";    this.fixedWidthSet_ = false;  }}this.panBox_(this.disableAutoPan_);if (!this.enableEventPropagation_) {  // Cancel event propagation.  //  this.eventListener1_ = google.maps.event.addDomListener(this.div_, "mousedown", cancelHandler);  this.eventListener2_ = google.maps.event.addDomListener(this.div_, "click", cancelHandler);  this.eventListener3_ = google.maps.event.addDomListener(this.div_, "dblclick", cancelHandler);  this.eventListener4_ = google.maps.event.addDomListener(this.div_, "mouseover", function (e) {    this.style.cursor = "default";  });}this.contextListener_ = google.maps.event.addDomListener(this.div_, "contextmenu", ignoreHandler);/** * This event is fired when the DIV containing the InfoBox's content is attached to the DOM. * @name InfoBox#domready * @event */google.maps.event.trigger(this, "domready");

}
};

/**
* Returns the HTML tag for the close box.
* @private
*/
InfoBox.prototype.getCloseBoxImg_ = function () {

var img = “”;

if (this.closeBoxURL_ !== “”) {

img  = "<img";img += " src='" + this.closeBoxURL_ + "'";img += " align=right"; // Do this because Opera chokes on style='float: right;'img += " style='";img += " position: relative;"; // Required by MSIEimg += " cursor: pointer;";img += " margin: " + this.closeBoxMargin_ + ";";img += "'>";

}

return img;
};

/**
* Adds the click handler to the InfoBox close box.
* @private
*/
InfoBox.prototype.addClickHandler_ = function () {

var closeBox;

if (this.closeBoxURL_ !== “”) {

closeBox = this.div_.firstChild;this.closeListener_ = google.maps.event.addDomListener(closeBox, 'click', this.getCloseClickHandler_());

} else {

this.closeListener_ = null;

}
};

/**
* Returns the function to call when the user clicks the close box of an InfoBox.
* @private
*/
InfoBox.prototype.getCloseClickHandler_ = function () {

var me = this;

return function (e) {

// 1.0.3 fix: Always prevent propagation of a close box click to the map:e.cancelBubble = true;if (e.stopPropagation) {  e.stopPropagation();}me.close();/** * This event is fired when the InfoBox's close box is clicked. * @name InfoBox#closeclick * @event */google.maps.event.trigger(me, "closeclick");

};
};

/**
* Pans the map so that the InfoBox appears entirely within the map’s visible area.
* @private
*/
InfoBox.prototype.panBox_ = function (disablePan) {

var map;
var bounds;
var xOffset = 0, yOffset = 0;

if (!disablePan) {

map = this.getMap();if (map instanceof google.maps.Map) { // Only pan if attached to map, not panorama  if (!map.getBounds().contains(this.position_)) {  // Marker not in visible area of map, so set center  // of map to the marker position first.    map.setCenter(this.position_);  }  bounds = map.getBounds();  var mapDiv = map.getDiv();  var mapWidth = mapDiv.offsetWidth;  var mapHeight = mapDiv.offsetHeight;  var iwOffsetX = this.pixelOffset_.width;  var iwOffsetY = this.pixelOffset_.height;  var iwWidth = this.div_.offsetWidth;  var iwHeight = this.div_.offsetHeight;  var padX = this.infoBoxClearance_.width;  var padY = this.infoBoxClearance_.height;  var pixPosition = this.getProjection().fromLatLngToContainerPixel(this.position_);  if (pixPosition.x < (-iwOffsetX + padX)) {    xOffset = pixPosition.x + iwOffsetX - padX;  } else if ((pixPosition.x + iwWidth + iwOffsetX + padX) > mapWidth) {    xOffset = pixPosition.x + iwWidth + iwOffsetX + padX - mapWidth;  }  if (this.alignBottom_) {    if (pixPosition.y < (-iwOffsetY + padY + iwHeight)) {      yOffset = pixPosition.y + iwOffsetY - padY - iwHeight;    } else if ((pixPosition.y + iwOffsetY + padY) > mapHeight) {      yOffset = pixPosition.y + iwOffsetY + padY - mapHeight;    }  } else {    if (pixPosition.y < (-iwOffsetY + padY)) {      yOffset = pixPosition.y + iwOffsetY - padY;    } else if ((pixPosition.y + iwHeight + iwOffsetY + padY) > mapHeight) {      yOffset = pixPosition.y + iwHeight + iwOffsetY + padY - mapHeight;    }  }  if (!(xOffset === 0 && yOffset === 0)) {    // Move the map to the shifted center.    //    var c = map.getCenter();    map.panBy(xOffset, yOffset);  }}

}
};

/**
* Sets the style of the InfoBox by setting the style sheet and applying
* other specific styles requested.
* @private
*/
InfoBox.prototype.setBoxStyle_ = function () {

var i, boxStyle;

if (this.div_) {

// Apply style values from the style sheet defined in the boxClass parameter:this.div_.className = this.boxClass_;// Clear existing inline style values:this.div_.style.cssText = "";// Apply style values defined in the boxStyle parameter:boxStyle = this.boxStyle_;for (i in boxStyle) {  if (boxStyle.hasOwnProperty(i)) {    this.div_.style[i] = boxStyle[i];  }}// Fix up opacity style for benefit of MSIE://if (typeof this.div_.style.opacity !== "undefined" && this.div_.style.opacity !== "") {  this.div_.style.filter = "alpha(opacity=" + (this.div_.style.opacity * 100) + ")";}// Apply required styles://this.div_.style.position = "absolute";this.div_.style.visibility = 'hidden';if (this.zIndex_ !== null) {  this.div_.style.zIndex = this.zIndex_;}

}
};

/**
* Get the widths of the borders of the InfoBox.
* @private
* @return {Object} widths object (top, bottom left, right)
*/
InfoBox.prototype.getBoxWidths_ = function () {

var computedStyle;
var bw = {top: 0, bottom: 0, left: 0, right: 0};
var box = this.div_;

if (document.defaultView && document.defaultView.getComputedStyle) {

computedStyle = box.ownerDocument.defaultView.getComputedStyle(box, "");if (computedStyle) {  // The computed styles are always in pixel units (good!)  bw.top = parseInt(computedStyle.borderTopWidth, 10) || 0;  bw.bottom = parseInt(computedStyle.borderBottomWidth, 10) || 0;  bw.left = parseInt(computedStyle.borderLeftWidth, 10) || 0;  bw.right = parseInt(computedStyle.borderRightWidth, 10) || 0;}

} else if (document.documentElement.currentStyle) { // MSIE

if (box.currentStyle) {  // The current styles may not be in pixel units, but assume they are (bad!)  bw.top = parseInt(box.currentStyle.borderTopWidth, 10) || 0;  bw.bottom = parseInt(box.currentStyle.borderBottomWidth, 10) || 0;  bw.left = parseInt(box.currentStyle.borderLeftWidth, 10) || 0;  bw.right = parseInt(box.currentStyle.borderRightWidth, 10) || 0;}

}

return bw;
};

/**
* Invoked when close is called. Do not call it directly.
*/
InfoBox.prototype.onRemove = function () {

if (this.div_) {

this.div_.parentNode.removeChild(this.div_);this.div_ = null;

}
};

/**
* Draws the InfoBox based on the current map projection and zoom level.
*/
InfoBox.prototype.draw = function () {

this.createInfoBoxDiv_();

var pixPosition = this.getProjection().fromLatLngToDivPixel(this.position_);

this.div_.style.left = (pixPosition.x + this.pixelOffset_.width) + “px”;

if (this.alignBottom_) {
this.div_.style.bottom = -(pixPosition.y + this.pixelOffset_.height) + “px”;
} else {
this.div_.style.top = (pixPosition.y + this.pixelOffset_.height) + “px”;
}

if (this.isHidden_) {

this.div_.style.visibility = 'hidden';

} else {

this.div_.style.visibility = "visible";

}
};

/**
* Sets the options for the InfoBox. Note that changes to the maxWidth,
* closeBoxMargin, closeBoxURL, and enableEventPropagation
* properties have no affect until the current InfoBox is closed and a new one
* is opened.
* @param {InfoBoxOptions} opt_opts
*/
InfoBox.prototype.setOptions = function (opt_opts) {
if (typeof opt_opts.boxClass !== “undefined”) { // Must be first

this.boxClass_ = opt_opts.boxClass;this.setBoxStyle_();

}
if (typeof opt_opts.boxStyle !== “undefined”) { // Must be second

this.boxStyle_ = opt_opts.boxStyle;this.setBoxStyle_();

}
if (typeof opt_opts.content !== “undefined”) {

this.setContent(opt_opts.content);

}
if (typeof opt_opts.disableAutoPan !== “undefined”) {

this.disableAutoPan_ = opt_opts.disableAutoPan;

}
if (typeof opt_opts.maxWidth !== “undefined”) {

this.maxWidth_ = opt_opts.maxWidth;

}
if (typeof opt_opts.pixelOffset !== “undefined”) {

this.pixelOffset_ = opt_opts.pixelOffset;

}
if (typeof opt_opts.alignBottom !== “undefined”) {

this.alignBottom_ = opt_opts.alignBottom;

}
if (typeof opt_opts.position !== “undefined”) {

this.setPosition(opt_opts.position);

}
if (typeof opt_opts.zIndex !== “undefined”) {

this.setZIndex(opt_opts.zIndex);

}
if (typeof opt_opts.closeBoxMargin !== “undefined”) {

this.closeBoxMargin_ = opt_opts.closeBoxMargin;

}
if (typeof opt_opts.closeBoxURL !== “undefined”) {

this.closeBoxURL_ = opt_opts.closeBoxURL;

}
if (typeof opt_opts.infoBoxClearance !== “undefined”) {

this.infoBoxClearance_ = opt_opts.infoBoxClearance;

}
if (typeof opt_opts.isHidden !== “undefined”) {

this.isHidden_ = opt_opts.isHidden;

}
if (typeof opt_opts.enableEventPropagation !== “undefined”) {

this.enableEventPropagation_ = opt_opts.enableEventPropagation;

}

if (this.div_) {

this.draw();

}
};

/**
* Sets the content of the InfoBox.
* The content can be plain text or an HTML DOM node.
* @param {string|Node} content
*/
InfoBox.prototype.setContent = function (content) {
this.content_ = content;

if (this.div_) {

if (this.closeListener_) {  google.maps.event.removeListener(this.closeListener_);  this.closeListener_ = null;}// Odd code required to make things work with MSIE.//if (!this.fixedWidthSet_) {  this.div_.style.width = "";}if (typeof content.nodeType === "undefined") {  this.div_.innerHTML = this.getCloseBoxImg_() + content;} else {  this.div_.innerHTML = this.getCloseBoxImg_();  this.div_.appendChild(content);}// Perverse code required to make things work with MSIE.// (Ensures the close box does, in fact, float to the right.)//if (!this.fixedWidthSet_) {  this.div_.style.width = this.div_.offsetWidth + "px";  if (typeof content.nodeType === "undefined") {    this.div_.innerHTML = this.getCloseBoxImg_() + content;  } else {    this.div_.innerHTML = this.getCloseBoxImg_();    this.div_.appendChild(content);  }}this.addClickHandler_();

}

/**
* This event is fired when the content of the InfoBox changes.
* @name InfoBox#content_changed
* @event
*/
google.maps.event.trigger(this, “content_changed”);
};

/**
* Sets the geographic location of the InfoBox.
* @param {LatLng} latlng
*/
InfoBox.prototype.setPosition = function (latlng) {

this.position_ = latlng;

if (this.div_) {

this.draw();

}

/**
* This event is fired when the position of the InfoBox changes.
* @name InfoBox#position_changed
* @event
*/
google.maps.event.trigger(this, “position_changed”);
};

/**
* Sets the zIndex style for the InfoBox.
* @param {number} index
*/
InfoBox.prototype.setZIndex = function (index) {

this.zIndex_ = index;

if (this.div_) {

this.div_.style.zIndex = index;

}

/**
* This event is fired when the zIndex of the InfoBox changes.
* @name InfoBox#zindex_changed
* @event
*/
google.maps.event.trigger(this, “zindex_changed”);
};

/**
* Returns the content of the InfoBox.
* @returns {string}
*/
InfoBox.prototype.getContent = function () {

return this.content_;
};

/**
* Returns the geographic location of the InfoBox.
* @returns {LatLng}
*/
InfoBox.prototype.getPosition = function () {

return this.position_;
};

/**
* Returns the zIndex for the InfoBox.
* @returns {number}
*/
InfoBox.prototype.getZIndex = function () {

return this.zIndex_;
};

/**
* Shows the InfoBox.
*/
InfoBox.prototype.show = function () {

this.isHidden_ = false;
if (this.div_) {
this.div_.style.visibility = “visible”;
}
};

/**
* Hides the InfoBox.
*/
InfoBox.prototype.hide = function () {

this.isHidden_ = true;
if (this.div_) {
this.div_.style.visibility = “hidden”;
}
};

/**
* Adds the InfoBox to the specified map or Street View panorama. If anchor
* (usually a google.maps.Marker) is specified, the position
* of the InfoBox is set to the position of the anchor. If the
* anchor is dragged to a new location, the InfoBox moves as well.
* @param {Map|StreetViewPanorama} map
* @param {MVCObject} [anchor]
*/
InfoBox.prototype.open = function (map, anchor) {

var me = this;

if (anchor) {

this.position_ = anchor.getPosition();this.moveListener_ = google.maps.event.addListener(anchor, "position_changed", function () {  me.setPosition(this.getPosition());});

}

this.setMap(map);

if (this.div_) {

this.panBox_();

}
};

/**
* Removes the InfoBox from the map.
*/
InfoBox.prototype.close = function () {

if (this.closeListener_) {

google.maps.event.removeListener(this.closeListener_);this.closeListener_ = null;

}

if (this.eventListener1_) {

google.maps.event.removeListener(this.eventListener1_);google.maps.event.removeListener(this.eventListener2_);google.maps.event.removeListener(this.eventListener3_);google.maps.event.removeListener(this.eventListener4_);this.eventListener1_ = null;this.eventListener2_ = null;this.eventListener3_ = null;this.eventListener4_ = null;

}

if (this.moveListener_) {

google.maps.event.removeListener(this.moveListener_);this.moveListener_ = null;

}

if (this.contextListener_) {

google.maps.event.removeListener(this.contextListener_);this.contextListener_ = null;

}

this.setMap(null);
};