Measure Widget 2.15 for Web App Builder
Tom, that makes sense regarding the freehand polygons.. Maybe it is best to just leave editing out of those. After thinking about it, I'm going to agree with you, probably best to leave it out on the freehands.
Now, for Point, that is how we've always done it, to measure lat long. One tool for both measure and draw, to be simpler for UI. Like our http://www.sagis.org/home/map Draw Tool courtesy Tim Witt, which we tweaked a bit, for example. What do you think?
Plus Coordinate Widget is just a stop gap. Its UI is okay for what it does, sit there and display coordinates. But, it is not good for a point lat/long, because it never actually drops a point on screen. It registers where you click and pauses to display coordinates there but there is no graphic point symbol. Not as useful as if you were to add it to Measure. Originally I had your widget and ESRI's but our boss said that was too much, too confusing with multiple tools, and I agree. Our goal will be all measurement in your tool, all drawing in Jeremie's eDraw. What are your thoughts??
(we like how yours does segments and editing etc, but we like how Jeremie's does saving the drawing, and layer ordering) For now, though, we'll do Coordinates for Point. I am also trying to convince Jeremie of the Point. 
Anyone else on Team Lat/Long Point?
Adam,
The problem with modifying the other shape types is that in an edit context, it makes you modify the shape by moving vertex points. For a circle or an ellipse you would have dozens of vertex points and moving any one of them would corrupt the image shape. The calculations for the shape would also be invalid. Here is an example:
The same would be true for all of the other geometry types. If you want to experiment with this you can modify line 214 to true. You may need to flush your browser cache and refresh the page.
I am not sure that I am understanding your question about the changing of text/label. When you have selected a shape to edit, you can modify the labels, color and size while it is selected. This shouldn't modify any other measurements you have drawn. Only the associated labels of the selected shape for editing.
Regards,
Tom
How would I go about changing the labels on the final output? Spelling out Feet or Square Feet takes up valuable real estate, especially in small area calculations of areas. Instead of Feet, I would like ' as the unit of measure. Same similar with Square Feet, ft2 or sq ft. Also, is it easy to drop the perimeter calculation?
Tom,
I tested your widget and notice that in IE11 the measurement return 0.0 feet. See image below.
Now, when I use Chrome. your widget work nicely.
Tom Sellsted Adam Gebhart I agree with Adam. I have found many of my users get confused between the area and perimeter measurements. I would propose one of two things. 1) Expose the decision to the user, so they choose before they draw a measurement with Perimeter and/or area is included, and maybe even allow a user to remove these text labels after the fact. And also to allow us devs to set both or just one or the other as on or off, by default (i.e. checkboxes but have perimiter unchecked unless users check it) ..or.. 2) or at least allow devs to remove perimeter easily with a checkbox interface in the widget config setup in the Dev Builder.
That would make it perfect. Our users really love how it updates the measurements in real time. The main thing this allows someone to do, is to draw out a graphic onto the map of a certain length. For example if they need to put up some proposed fencing, or buildings, or whatever, of already known dimensions, they can quickly sketch it out onto the map with your Measurement tool. Thanks again, this is a great widget! We are going live tomorrow across the city and county with our flagship viewer based on WAB and this widget is an important part of it.
Also, if we had a Point for lat/long in Measurement we could get rid of the Coordinates widget from ESRI. We also have surveyors using it as does Adam and they need that. If you do so, perhaps at first you could just add it with a set coordinate system. But it would amazing if you could both let Dev specify coordinate systems for the lat/long or perhaps even expose this to the user and let them choose from a list of pre-set coordinate systems that the Dev put in. For example, choice between WGS 84 or State Plane decimal degrees or state plane degrees minutes seconds. Oh, and MGRS / UTM (big for the military and search and rescue) Sorry I know this is a lot!!!! But it's already by far the best measurement out there (far better than ESRI's) and so, when I think of any ideas for Measurement, I come here. 
About the only other thing it could do is measure height! Oh goodness, I just typed that up as a joke..But I just realized, with the ESRI WAB 2.0 3D that may not be a bad idea. Your widget is the king of measurement so, well... yah, height. I know that's a very, very, different animal but nevertheless..if ESRI exposes it in the API and to their built-in widget... maybe it won't actually be that hard to utilize.
Anyhow, I'm going to take a look now and see if I can manually hide the perimeter. It looks like I might be able to intercept it at "var length = localeLength + " " + lengthAbbr;" and if it's a polygon set this to a null. Will explorer after getting our viewer shipped out as 1.0 tomorrow.