Develop Reference

How to create a line connection mxGraph

I am trying to create a line connection on click an image icon, I have tried the same using the wires.html example. But it is not working. I am using react with mxGraph. How to implement this. Is there any way to achieve this.
mxEvent.addGestureListeners(
img,
mxUtils.bind(this, function(evt) {
mxConnectionHandler.prototype.isStartEvent = function(me) {
console.log("Here we have to start the line connection");
};
})
);
I have to start the line connection inside the bind event. Is there anyway to fix this. I have tried but none of them is working.
I really need help.
In the image Arrow Connection (Multiple points are not supported. Used for directly connecting source to target) is working properly. But need to implement Line Connection (Multiple points are supported. Starting from source we can click any where to create multiple points till the target connection).
Please check the below URL for example
Demo URL: http://jithin.com/javascript/examples/contexticons.html
Source Code URL: https://jsfiddle.net/fs1ox2kt/
In the Demo URL, when click on a cell 4 icons will be displaying (Delete, Resize, Move, Connect). I have replaced Delete with Line Connection and Resize with Arrow Connection. Please have a look.

I am not sure I understand your question correctly, so I am answering to some possible ones:
I found the hello world example very helpful for understanding how to write code which allows to create and modify nodes and connections using mxGraph.
Your tags suggest that you are using React. Interestingly, you are not mentioning Redux-Saga as library. If you are not using it yet, you might want to have a look at the concept of reducers.
Your question might also be about the specific behavior of a mxGraph line connection:
when I click on the line connection hover icon it does not start from the cell.
When looking at the workflow example, I do not see any hover icon when I want to draw a line or connection from a task box to another. I remember vividly that it took me a while to figure out that you have to click on the source box, hold, and drag onto the target box.
If your question is more about hover icons, you have already another (unanswered) question on that: adding connection handler on click hover icon not working mxGraph
EDIT: I finally understood that the icons in your figure are the hover icons, so there is a 5th interpretation of your question:
Problem description: The user clicks on the orange box with the microchip-icon then some pop-up menu (your hover-icons) appear, and then the user should choose a line type by clicking on on of the items. The endpoint of the respective line should still be the task box the user selected initially.
Solution sketch: Already in the initial onClick-event, you should populate a variable final_vertex with the coordinates of the box with the micro-chip icon containing the coordinates of the click, or the respective vertex - your box. When drawing the chosen connection, you have to make sure to choose this final_vertex as end-point, and the box with the lambda-icon as initial vertex. In other words, you need at least two events - the initial onClick and an onHoverItemClick. I am not too familiar with mxGraph, but I assume you cannot solve the issue with a single event-handler.

Dynamic cloning when creating boxes

I have an issue that I can't seem to resolve. Even though my current job does not call for integration, I have been doing a bit of it for a specific project.
BACKGROUND:
Basically, this is what I am currently working on: when I click on my fake button, it creates a box - more clicks, means more boxes which are created. However, the boxes need to be able to do one more thing than simply replicate - each one of them needs to allow me to drag and drop an image into them. So, if I click 5 times on the fake button, the 5 new boxes needs to allow me to drag and drop 5 different images. Currently, I have a box there by default (as a testing ground).
PROBLEM:
I cannot seem to duplicate the boxes correctly. I have tried several things, including switching classes to id's and what not to try and merge several pieces of coding together. Ultimately, I need to be able to place any images in the draggable boxes. 5 boxes, 5 images dragged into them etc.
NOTE 1:
I cannot use server-side coding, as I don't have access to the server. All of it has to be client side.
NOTE 2:
The images I bring in are from outside folders - from the desktop (dragged and dropped).
NOTE 3:
I watered down the code in the fiddle to only have the pieces of coding relevant to what I am attempting to do. However, the scripts there don't work within the fiddle, since I had to take them out of the environment. Though, they do work within the correct environment.
FIDDLE:
[My link] https://jsfiddle.net/t9dq3w28/10/
...

Timing issue with image load?

I have a draggable image class that displays an image as expected when it is the only object on the stage. But when I add other graphics objects the image is not visible until I mouseover where the image is located.
It seems like the stage needs an extra update when there are more graphics objects on the display list. Calling tick() or setting my update flag manually doesn’t solve the issue (presumably this happens too quickly).
I can hack around it by putting a counter in the tick function like
if(update || ticks < 10). Clearly, this is not really a solution; the tick code shouldn’t have to check the counter every tick, forever.
Does anybody know the correct way?
You can see it here: http://eduk8r.org/bridge/. You’ll have to mouseover the image the first time, though. (The image is located to the left hand side of the bridge).
The relevant code is in controller.js and DraggableImage.js.
UPDATE: I had thought that reloading the page was sufficient to display the image but that only seems to happen locally.

Rally App Disappears - Why?

I currently have an app that has five components. On the left I have a radio button field and a grid below it, on the right I have a display field, chart, and another grid [top to bottom]. The radio buttons filter every other component by a certain date, and the left grid [when selected] will filter the right components by the selected object.
Currently the app does what is needed, but when I select a few radio buttons in a row OR select a few objects in the grid, the app will eventually totally disappear. I tried running the app externally and internally with a custom HTML app, but the problem does not go away.
Here is a picture of the app before anything crashes:
Interestingly, when I look through the chrome debugger and look at the Elements tab, I see there are lots of masks that have been created and not destroyed. Here is a picture of a slight piece of the HTML that looks fishy and occurs after I select a few objects from the left grid:
Every time I select a new object, one more mask will be added to the DOM. I don't know if this is what breaks my app, but it seems odd so it may be related?
I didn't include any code because I thought it should be some easy fix - plus, the code does exactly what it should [before it disappears]. Any help on how to fix an app that disappears would be great!

In itself a mask sticking around to be reused after data loaded successfully is not an indication of a problem. I see mask being created and not destroyed in a simpler app:
Perhaps what you experience is an issue of timing when elements load asynchronously.

Need something to give me a swap image on click behavior

I can use CSS or javascript but I've been struggling with it. It needs to be an "on-click" behavior when you click on the number in the lower right corner... like this one: http://www.winteradagency.com/mrw/images/residential2.jpg
So that when you click on #1 you get the first photo, #2 the 2nd one and so on...
Any ideas?
thanks!

Without showing what you've tried, I'm a little reluctant to just give you the answer. You'll learn more if I don't. If you provide code and show where you're stuck and such, well, that's a different story.
That being said, if you want to use jQuery, there are some nice plugins that have a similar functionality to what you want. One of them being Easy Slider. Here's also a list of 15 jQuery Image Gallery Plugins that I got from doing a quick google search.

Why not create four buttons and align it to right end, and everytime the image changes you update the text of the buttons. Each button could simply update the image to the one corresponding to its number.