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1839 lines (1616 loc) · 61.8 KB
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(function () {
"use strict";
/**
* GitGraph
*
* @constructor
*
* @param {object} [options] - GitGraph options
* @param {string} [options.elementId = "gitGraph"] - Id of the canvas container
* @param {Template|string|object} [options.template] - Template of the graph
* @param {string} [options.author = "Sergio Flores <saxo-guy@epic.com>"] - Default author for commits
* @param {string} [options.mode = (null|"compact")] - Display mode
* @param {HTMLElement} [options.canvas] - DOM canvas (ex: document.getElementById("id"))
* @param {string} [options.orientation = ("vertical-reverse"|"horizontal"|"horizontal-reverse")] - Graph orientation
* @param {boolean} [options.reverseArrow = false] - Make arrows point to ancestors if true
* @param {number} [options.initCommitOffsetX = 0] - Add custom offsetX to initial commit.
* @param {number} [options.initCommitOffsetY = 0] - Add custom offsetY to initial commit.
* @param {HTMLElement} [options.tooltipContainer = document.body] - HTML Element containing tooltips in compact mode.
*
* @this GitGraph
**/
function GitGraph(options) {
// Options
options = _isObject(options) ? options : {};
this.elementId = (typeof options.elementId === "string") ? options.elementId : "gitGraph";
this.author = (typeof options.author === "string") ? options.author : "Sergio Flores <saxo-guy@epic.com>";
this.reverseArrow = _booleanOptionOr(options.reverseArrow, false);
// Template management
if ((typeof options.template === "string") || _isObject(options.template)) {
this.template = this.newTemplate(options.template);
} else if (options.template instanceof Template) {
this.template = options.template;
} else {
this.template = this.newTemplate("metro");
}
this.mode = options.mode || null;
if (this.mode === "compact") {
this.template.commit.message.display = false;
}
// Orientation
switch (options.orientation) {
case "vertical-reverse":
this.template.commit.spacingY *= -1;
this.orientation = "vertical-reverse";
this.template.branch.labelRotation = _isNullOrUndefined(options, "template.branch.labelRotation") ?
0 : options.template.branch.labelRotation;
this.template.commit.tag.spacingY *= -1;
break;
case "horizontal":
this.template.commit.message.display = false;
this.template.commit.spacingX = this.template.commit.spacingY;
this.template.branch.spacingY = this.template.branch.spacingX;
this.template.commit.spacingY = 0;
this.template.branch.spacingX = 0;
this.orientation = "horizontal";
this.template.branch.labelRotation = _isNullOrUndefined(options, "template.branch.labelRotation") ?
-90 : options.template.branch.labelRotation;
this.template.commit.tag.spacingX = -this.template.commit.spacingX;
this.template.commit.tag.spacingY = this.template.branch.spacingY;
break;
case "horizontal-reverse":
this.template.commit.message.display = false;
this.template.commit.spacingX = -this.template.commit.spacingY;
this.template.branch.spacingY = this.template.branch.spacingX;
this.template.commit.spacingY = 0;
this.template.branch.spacingX = 0;
this.orientation = "horizontal-reverse";
this.template.branch.labelRotation = _isNullOrUndefined(options, "template.branch.labelRotation") ?
90 : options.template.branch.labelRotation;
this.template.commit.tag.spacingX = -this.template.commit.spacingY;
this.template.commit.tag.spacingY = this.template.branch.spacingY;
break;
default:
this.orientation = "vertical";
this.template.branch.labelRotation = _isNullOrUndefined(options, "template.branch.labelRotation") ?
0 : options.template.branch.labelRotation;
break;
}
this.marginX = this.template.branch.spacingX + this.template.commit.dot.size * 2;
this.marginY = this.template.branch.spacingY + this.template.commit.dot.size * 2;
this.offsetX = 0;
this.offsetY = 0;
// Canvas init
this.canvas = document.getElementById(this.elementId) || options.canvas;
this.context = this.canvas.getContext("2d");
this.context.textBaseline = "center";
// Tooltip layer
this.tooltip = document.createElement("div");
this.tooltip.className = "gitgraph-tooltip";
this.tooltip.style.position = "fixed";
this.tooltip.style.display = "none";
var tooltipContainer = options.tooltipContainer || document.body;
tooltipContainer.appendChild(this.tooltip);
// Navigation vars
this.HEAD = null;
this.branches = [];
this.commits = [];
// Utilities
this.columnMax = 0; // nb of column for message position
this.commitOffsetX = options.initCommitOffsetX || 0;
this.commitOffsetY = options.initCommitOffsetY || 0;
// Bindings
this.mouseMoveOptions = {
handleEvent: this.hover,
gitgraph: this
};
this.canvas.addEventListener("mousemove", this.mouseMoveOptions, false);
this.mouseDownOptions = {
handleEvent: this.click,
gitgraph: this
};
this.canvas.addEventListener("mousedown", this.mouseDownOptions, false);
// Render on window resize
window.onresize = this.render.bind(this);
}
/**
* Disposing canvas event handlers
*
* @this GitGraph
**/
GitGraph.prototype.dispose = function () {
this.canvas.removeEventListener("mousemove", this.mouseMoveOptions, false);
this.canvas.removeEventListener("mousedown", this.mouseDownOptions, false);
};
/**
* Create new branch
*
* @param {(string|object)} options - Branch name | Options of Branch
*
* @see Branch
* @this GitGraph
*
* @return {Branch} New branch
**/
GitGraph.prototype.branch = function (options) {
// Options
if (typeof options === "string") {
var name = options;
options = {};
options.name = name;
}
options = _isObject(options) ? options : {};
options.parent = this;
options.parentBranch = options.parentBranch || this.HEAD;
// Add branch
var branch = new Branch(options);
this.branches.push(branch);
// Return
return branch;
};
/**
* Create new orphan branch
*
* @param {(string|object)} options - Branch name | Options of Branch
*
* @see Branch
* @this GitGraph
*
* @return {Branch} New branch
**/
GitGraph.prototype.orphanBranch = function (options) {
// Options
if (typeof options === "string") {
var name = options;
options = {};
options.name = name;
}
options = _isObject(options) ? options : {};
options.parent = this;
// Add branch
var branch = new Branch(options);
this.branches.push(branch);
// Return
return branch;
};
/**
* Commit on HEAD
*
* @param {(string|BranchCommitOptions)} options - Message | Options of commit
*
* @see Commit
* @this GitGraph
*
* @return {GitGraph} this - Return the main object so we can chain
**/
GitGraph.prototype.commit = function (options) {
this.HEAD.commit(options);
// Return the main object so we can chain
return this;
};
/**
* Tag the HEAD
*
* @param {object} options - Options of tag
*
* @see Tag
* @this GitGraph
*
* @return {GitGraph} this - Return the main object so we can chain
**/
GitGraph.prototype.tag = function (options) {
this.HEAD.tag(options);
// Return the main object so we can chain
return this;
};
/**
* Create a new template
*
* @param {(string|object)} options - The template name, or the template options
*
* @see Template
* @this GitGraph
*
* @return {Template}
**/
GitGraph.prototype.newTemplate = function (options) {
if (typeof options === "string") {
return new Template().get(options);
}
return new Template(options);
};
/**
* Render the canvas
*
* @this GitGraph
**/
GitGraph.prototype.render = function () {
this.scalingFactor = _getScale(this.context);
// Resize canvas
var unscaledResolution = {
x: Math.abs((this.columnMax + 1) * this.template.branch.spacingX) +
Math.abs(this.commitOffsetX) +
this.marginX * 2,
y: Math.abs((this.columnMax + 1) * this.template.branch.spacingY) +
Math.abs(this.commitOffsetY) +
this.marginY * 2
};
if (this.template.commit.message.display) {
unscaledResolution.x += 800;
}
unscaledResolution.x += this.template.commit.widthExtension;
this.canvas.style.width = unscaledResolution.x + "px";
this.canvas.style.height = unscaledResolution.y + "px";
this.canvas.width = unscaledResolution.x * this.scalingFactor;
this.canvas.height = unscaledResolution.y * this.scalingFactor;
// Clear All
this.context.clearRect(0, 0, this.canvas.width, this.canvas.height);
// Add some margin
this.context.translate(this.marginX, this.marginY);
// Translate for inverse orientation
if (this.template.commit.spacingY > 0) {
this.context.translate(0, this.canvas.height - this.marginY * 2);
this.offsetY = this.canvas.height - this.marginY * 2;
}
if (this.template.commit.spacingX > 0) {
this.context.translate(this.canvas.width - this.marginX * 2, 0);
this.offsetX = this.canvas.width - this.marginX * 2;
}
// Scale the context when every transformations have been made.
this.context.scale(this.scalingFactor, this.scalingFactor);
// Render branches
for (var i = this.branches.length - 1, branch; !!(branch = this.branches[i]); i--) {
branch.render();
}
// Render commits after to put them on the foreground
for (var j = 0, commit; !!(commit = this.commits[j]); j++) {
commit.render();
}
_emitEvent(this.canvas, "graph:render", {
id: this.elementId
});
};
/**
* A callback for each commit
*
* @callback CommitCallback
* @param {Commit} commit - A commit
* @param {boolean} mouseOver - True, if the mouse is currently hovering over the commit
* @param {Event} event - The DOM event (e.g. a click event)
*/
/**
* A formatter for commit
*
* @callback CommitFormatter
* @param {Commit} commit - The commit to format
*/
/**
* Hover event on commit dot
*
* @param {MouseEvent} event - Mouse event
* @param {CommitCallback} callbackFn - A callback function that will be called for each commit
*
* @this GitGraph
**/
GitGraph.prototype.applyCommits = function (event, callbackFn) {
// Fallback onto layerX/layerY for older versions of Firefox.
function getOffsetById(id) {
var el = document.getElementById(id);
var rect = el.getBoundingClientRect();
return {
top: rect.top + document.body.scrollTop,
left: rect.left + document.body.scrollLeft
};
}
var offsetX = event.offsetX || (event.pageX - getOffsetById(this.elementId).left);
var offsetY = event.offsetY || (event.pageY - getOffsetById(this.elementId).top);
for (var i = 0, commit; !!(commit = this.commits[i]); i++) {
var distanceX = (commit.x + (this.offsetX + this.marginX) / this.scalingFactor - offsetX);
var distanceY = (commit.y + (this.offsetY + this.marginY) / this.scalingFactor - offsetY);
var distanceBetweenCommitCenterAndMouse = Math.sqrt(Math.pow(distanceX, 2) + Math.pow(distanceY, 2));
var isOverCommit = distanceBetweenCommitCenterAndMouse < this.template.commit.dot.size;
callbackFn(commit, isOverCommit, event);
}
};
/**
* Hover event on commit dot
*
* @param {MouseEvent} event - Mouse event
*
* @this GitGraph
**/
GitGraph.prototype.hover = function (event) {
var self = this.gitgraph;
var isOut = true;
function showCommitTooltip(commit) {
if (!commit.tooltipDisplay) {
return;
}
self.tooltip.style.left = event.clientX + "px"; // TODO Scroll bug
self.tooltip.style.top = event.clientY + "px"; // TODO Scroll bug
if (self.template.commit.tooltipHTMLFormatter !== null) {
self.tooltip.innerHTML = self.template.commit.tooltipHTMLFormatter(commit);
} else {
self.tooltip.textContent = commit.sha1 + " - " + commit.message;
}
self.tooltip.style.display = "block";
}
function emitCommitEvent(commit, event) {
var mouseEventOptions = {
author: commit.author,
message: commit.message,
date: commit.date,
sha1: commit.sha1
};
_emitEvent(self.canvas, "commit:" + event, mouseEventOptions);
}
self.applyCommits(event, function (commit, isOverCommit, event) {
if (isOverCommit) {
if (!self.template.commit.message.display && self.template.commit.shouldDisplayTooltipsInCompactMode) {
showCommitTooltip(commit);
}
// Don't emit event if we already were over a commit.
if (!commit.isMouseOver) {
emitCommitEvent(commit, "mouseover");
}
isOut = false;
commit.isMouseOver = true;
} else {
// Don't emit event if we already were out of a commit.
if (commit.isMouseOver) {
emitCommitEvent(commit, "mouseout");
}
commit.isMouseOver = false;
}
});
if (isOut) {
self.tooltip.style.display = "none";
}
};
/**
* Click event on commit dot
*
* @param {MouseEvent} event - Mouse event
*
* @this GitGraph
**/
GitGraph.prototype.click = function (event) {
this.gitgraph.applyCommits(event, function (commit, isOverCommit, event) {
if (!isOverCommit) {
return;
}
if (commit.onClick !== null) {
commit.onClick(commit, true, event);
}
});
};
// --------------------------------------------------------------------
// ----------------------- Branch ------------------------
// --------------------------------------------------------------------
/**
* Branch
*
* @constructor
*
* @param {object} options - Options of branch
* @param {GitGraph} options.parent - GitGraph constructor
* @param {Branch} [options.parentBranch = options.parentCommit.branch] - Parent branch
* @param {Commit} [options.parentCommit = _getLast(options.parentBranch.commits)] - Parent commit
* @param {string} [options.name = "no-name"] - Branch name
* @param {number[]} [options.lineDash = this.template.branch.lineDash] - Branch line dash segments
* @param {object} [options.commitDefaultOptions = {}] - Default options for commits
*
* @this Branch
**/
function Branch(options) {
// Check integrity
if (options.parent instanceof GitGraph === false) {
return;
}
// Options
options = _isObject(options) ? options : {};
this.parent = options.parent;
if (options.parentCommit && options.parentBranch) {
if (options.parentCommit.branch !== options.parentBranch) {
return;
}
this.parentCommit = options.parentCommit;
this.parentBranch = options.parentBranch;
} else if (options.parentCommit) {
this.parentCommit = options.parentCommit;
this.parentBranch = options.parentCommit.branch;
} else if (options.parentBranch) {
this.parentCommit = _getParentCommitFromBranch(options.parentBranch);
this.parentBranch = options.parentBranch;
} else {
this.parentCommit = null;
this.parentBranch = null;
}
this.name = (typeof options.name === "string") ? options.name : "no-name";
this.commitDefaultOptions = _isObject(options.commitDefaultOptions) ? options.commitDefaultOptions : {};
this.context = this.parent.context;
this.template = this.parent.template;
this.lineWidth = options.lineWidth || this.template.branch.lineWidth;
this.lineDash = options.lineDash || this.template.branch.lineDash;
this.showLabel = _booleanOptionOr(options.showLabel, this.template.branch.showLabel);
this.spacingX = this.template.branch.spacingX;
this.spacingY = this.template.branch.spacingY;
this.size = 0;
this.height = 0;
this.width = 0;
this.commits = [];
this.path = []; // Path to draw, this is an array of points {x, y, type("start"|"joint"|"end")}
// Column number calculation for auto-color & auto-offset
if (typeof options.column === "number") {
this.column = options.column;
} else {
this.column = 0;
this.calculColumn();
}
this.parent.columnMax = (this.column > this.parent.columnMax) ? this.column : this.parent.columnMax;
// Options with auto value
this.offsetX = this.column * this.spacingX;
this.offsetY = this.column * this.spacingY;
// Add start point
if (this.parentBranch && this.parentCommit) {
if (this.parentCommit === _getParentCommitFromBranch(this.parentBranch) && this.commits.length > 0) {
this.startPoint = {
x: this.parentBranch.offsetX - this.parent.commitOffsetX + this.template.commit.spacingX,
y: this.parentBranch.offsetY - this.parent.commitOffsetY + this.template.commit.spacingY,
type: "start"
};
} else {
this.startPoint = {
x: this.parentCommit.x,
y: this.parentCommit.y,
type: "start"
};
}
} else {
this.startPoint = null;
}
var columnIndex = (this.column % this.template.colors.length);
this.color = options.color || this.template.branch.color || this.template.colors[columnIndex];
// Checkout on this new branch
this.checkout();
}
/**
* Create new branch
*
* @param {(string|object)} options - Branch name | Options of Branch
*
* @see Branch
* @this Branch
*
* @return {Branch} New Branch
**/
Branch.prototype.branch = function (options) {
// Options
if (typeof options === "string") {
var name = options;
options = {};
options.name = name;
}
options = _isObject(options) ? options : {};
options.parent = this.parent;
options.parentBranch = options.parentBranch || this;
// Add branch
var branch = new Branch(options);
this.parent.branches.push(branch);
// Return
return branch;
};
/**
* Render the branch
*
* @this Branch
**/
Branch.prototype.render = function () {
this.context.beginPath();
for (var i = 0, point; !!(point = this.path[i]); i++) {
if (point.type === "start") {
this.context.moveTo(point.x, point.y);
} else {
if (this.template.branch.mergeStyle === "bezier") {
var path = this.path[i - 1];
this.context.bezierCurveTo(
path.x - this.template.commit.spacingX / 2, path.y - this.template.commit.spacingY / 2,
point.x + this.template.commit.spacingX / 2, point.y + this.template.commit.spacingY / 2,
point.x, point.y
);
} else {
this.context.lineTo(point.x, point.y);
}
}
}
this.context.lineWidth = this.lineWidth;
this.context.strokeStyle = this.color;
if (typeof this.context.setLineDash === "function") {
this.context.setLineDash(this.lineDash);
}
this.context.stroke();
this.context.closePath();
};
/**
* Branch commit options
*
* @typedef {object} BranchCommitOptions
*
* @property {string} [color] - Master color (dot & message)
* @property {string} [author = this.parent.author] - Author name & email
* @property {string} [date] - Date of commit, default is now
* @property {string} [detail] - DOM Element of detail part
* @property {string} [sha1] - Sha1, default is a random short sha1
* @property {Commit} [parentCommit] - Parent commit
* @property {string} [type = ("mergeCommit"|null)] - Type of commit
*
* @property {string} [tag] - Tag of the commit
* @property {string} [tagColor = color] - Color of the tag
* @property {string} [tagFont = this.template.commit.tag.font] - Font of the tag
* @property {string} [displayTagBox = true] - If true, display a box around the tag
*
* @property {string} [dotColor = color] - Specific dot color
* @property {number} [dotSize = this.template.commit.dot.size] - Dot size
* @property {number} [dotStrokeWidth = this.template.commit.dot.strokeWidth] - Dot stroke width
* @property {string} [dotStrokeColor = this.template.commit.dot.strokeColor]
*
* @property {string} [message = "He doesn't like George Michael! Boooo!"] - Commit message
* @property {string} [messageColor = color] - Specific message color
* @property {string} [messageFont = this.template.commit.message.font] - Font of the message
* @property {boolean} [messageDisplay = this.template.commit.message.display] - Commit message display policy
* @property {boolean} [messageAuthorDisplay = this.template.commit.message.displayAuthor] - Commit message author policy
* @property {boolean} [messageBranchDisplay = this.template.commit.message.displayBranch] - Commit message author policy
* @property {boolean} [messageHashDisplay = this.template.commit.message.displayHash] - Commit message hash policy
*
* @property {string} [labelColor = color] - Specific label color
* @property {string} [labelFont = this.template.branch.labelFont] - Font used for labels
*
* @property {boolean} [tooltipDisplay = true] - Tooltip message display policy
* @property {CommitCallback} [onClick] - OnClick event for the commit dot
* @property {object} [representedObject] - Any object which is related to this commit. Can be used in onClick or the formatter. Useful to bind the commit to external objects such as database id etc.
**/
/**
* Add a commit
*
* @param {(string|BranchCommitOptions)} [options] - Message | Options of commit
* @param {string} [options.detailId] - Id of detail DOM Element
*
* @see Commit
*
* @this Branch
**/
Branch.prototype.commit = function (options) {
if (typeof (options) === "string") {
options = {
message: options
};
} else if (typeof (options) !== "object") {
options = {};
}
options.arrowDisplay = this.template.arrow.active;
options.branch = this;
var columnIndex = (this.column % this.template.colors.length);
options.color = options.color ||
this.commitDefaultOptions.color ||
this.template.commit.color ||
this.template.colors[columnIndex];
options.parent = this.parent;
// Set parentCommit
// If there is commit in this branch, set parentCommit to last commit of this branch
// otherwise, set parentCommit to this.parentCommit, the start point of this branch
if (!options.parentCommit) {
options.parentCommit = _getLast(this.commits) || this.parentCommit;
}
// Special compact mode
if (this.parent.mode === "compact" &&
_getLast(this.parent.commits) &&
_getLast(this.parent.commits).branch !== options.branch &&
options.branch.commits.length &&
options.type !== "mergeCommit") {
this.parent.commitOffsetX -= this.template.commit.spacingX;
this.parent.commitOffsetY -= this.template.commit.spacingY;
}
options.messageColor = options.messageColor ||
this.commitDefaultOptions.messageColor ||
this.template.commit.message.color ||
options.color ||
null;
options.labelColor = options.labelColor ||
this.commitDefaultOptions.labelColor ||
this.template.branch.labelColor ||
options.color ||
null;
options.tagColor = options.tagColor ||
this.commitDefaultOptions.tagColor ||
this.template.commit.tag.color ||
options.color ||
null;
options.dotColor = options.dotColor ||
this.commitDefaultOptions.dotColor ||
this.template.commit.dot.color ||
options.color ||
null;
options.x = this.offsetX - this.parent.commitOffsetX;
options.y = this.offsetY - this.parent.commitOffsetY;
// Detail
var isCompact = (this.parent.mode === "compact");
if (typeof options.detailId === "string" && !isCompact) {
options.detail = document.getElementById(options.detailId);
} else {
options.detail = null;
}
// Check collision (Cause of special compact mode)
var previousCommit = _getLast(options.branch.commits) || {};
var commitPosition = options.x + options.y;
var previousCommitPosition = previousCommit.x + previousCommit.y;
var isCommitAtSamePlaceThanPreviousOne = (commitPosition === previousCommitPosition);
if (isCommitAtSamePlaceThanPreviousOne) {
this.parent.commitOffsetX += this.template.commit.spacingX;
this.parent.commitOffsetY += this.template.commit.spacingY;
options.x = this.offsetX - this.parent.commitOffsetX;
options.y = this.offsetY - this.parent.commitOffsetY;
}
// First commit
var isFirstBranch = !(options.parentCommit instanceof Commit);
var isPathBeginning = this.path.length === 0;
options.showLabel = (isPathBeginning && this.showLabel);
if (options.showLabel) {
options.x -= this.template.commit.spacingX;
options.y -= this.template.commit.spacingY;
}
var commit = new Commit(options);
this.commits.push(commit);
// Add point(s) to path
var point = {
x: commit.x,
y: commit.y,
type: "joint"
};
if (!isFirstBranch && isPathBeginning) {
this.pushPath(this.startPoint);
// Add a path joint to startpoint + template spacing
// So that line will not go through commit of other branches
if (_isVertical(this.parent)) {
this.pushPath({
x: commit.x,
y: this.startPoint.y - this.template.commit.spacingY,
type: "joint"
});
} else {
this.pushPath({
x: this.startPoint.x - this.template.commit.spacingX,
y: commit.y,
type: "joint"
});
}
} else if (isPathBeginning) {
point.type = "start";
}
this.pushPath(point);
// Increment commitOffset for next commit position
this.parent.commitOffsetX += this.template.commit.spacingX * (options.showLabel ? 2 : 1);
this.parent.commitOffsetY += this.template.commit.spacingY * (options.showLabel ? 2 : 1);
// Add height of detail div (vertical mode only)
if (commit.detail !== null && _isVertical(this.parent)) {
commit.detail.style.display = "block";
if (this.parent.orientation === "vertical-reverse") {
this.parent.commitOffsetY += commit.detail.clientHeight;
} else {
this.parent.commitOffsetY -= commit.detail.clientHeight;
}
}
// Auto-render
this.parent.render();
// Return the main object so we can chain
return this;
};
/**
* Tag the last commit of the branch.
*
* @param {(string|object)} [options] - Message | Options of the tag
* @param {string} [options.tag] - Message of the tag
* @param {string} [options.tagColor] - Color of the tag
* @param {string} [options.tagFont] - Font of the tag
* @param {boolean} [options.displayTagBox] - If true, display a box around the tag
*
* @see Tag
*
* @this Branch
* */
Branch.prototype.tag = function (options) {
if (typeof options === "string") {
options = {
tag: options
};
}
options = _isObject(options) ? options : {};
var lastCommit = _getLast(this.commits);
if (_isObject(lastCommit)) {
_assignTagOptionsToCommit(lastCommit, options);
this.parent.render();
}
// Return the main object so we can chain
return this;
};
/**
* Checkout onto this branch
*
* @this Branch
**/
Branch.prototype.checkout = function () {
this.parent.HEAD = this;
};
/**
* Delete this branch
*
* @this Branch
**/
Branch.prototype.delete = function () {
this.isDeleted = true;
};
/**
* Merge branch
*
* @param {Branch} [target = this.parent.HEAD]
* @param {(string|object)} [commitOptions] - Message | Options of commit
* @param {boolean} [commitOptions.fastForward = false] - If true, merge should use fast-forward if possible
*
* @see Commit
* @this Branch
*
* @return {Branch} this
**/
Branch.prototype.merge = function (target, commitOptions) {
// Merge target
var targetBranch = target || this.parent.HEAD;
// Check integrity of target
if (targetBranch instanceof Branch === false || targetBranch === this) {
return this;
}
var firstBranchCommit = this.commits[0];
if (!firstBranchCommit) {
console.log(this.name + " is already up-to-date with " + targetBranch.name);
return this;
}
// Merge commit
var defaultMessage = "Merge branch `" + this.name + "` into `" + targetBranch.name + "`";
if (typeof commitOptions !== "object") {
var message = commitOptions;
commitOptions = {};
commitOptions.message = (typeof message === "string") ? message : defaultMessage;
} else {
commitOptions.message = commitOptions.message || defaultMessage;
}
commitOptions.type = "mergeCommit";
commitOptions.parentCommit = _getParentCommitFromBranch(this);
var branchParentCommit = firstBranchCommit.parentCommit;
var targetBranchParentCommit = _getParentCommitFromBranch(targetBranch);
var isFastForwardPossible = (branchParentCommit && branchParentCommit.sha1 === targetBranchParentCommit.sha1);
if (commitOptions.fastForward && isFastForwardPossible) {
var isGraphHorizontal = _isHorizontal(this.parent);
this.color = targetBranch.color;
// Make branch path follow target branch ones
if (isGraphHorizontal) {
var targetBranchY = targetBranch.path[1].y;
this.path.forEach(function (point) {
point.y = targetBranchY;
});
} else {
var targetBranchX = targetBranch.path[1].x;
this.path.forEach(function (point) {
point.x = targetBranchX;
});
}
this.commits.forEach(function (commit) {
if (isGraphHorizontal) {
commit.y = branchParentCommit.y;
} else {
commit.x = branchParentCommit.x;
}
commit.labelColor = branchParentCommit.labelColor;
commit.messageColor = branchParentCommit.messageColor;
commit.dotColor = branchParentCommit.dotColor;
commit.dotStrokeColor = branchParentCommit.dotStrokeColor;
});
} else {
targetBranch.commit(commitOptions);
var detailOffsetY = 0;
if (commitOptions.detail) {
if (this.parent.orientation === "vertical") {
detailOffsetY = -1 * commitOptions.detail.clientHeight;
} else if (this.parent.orientation === "vertical-reverse") {
detailOffsetY = commitOptions.detail.clientHeight;
}
}
// Add points to path
var targetCommit = _getLast(targetBranch.commits);
var endOfBranch = {
x: this.offsetX + this.template.commit.spacingX * (targetCommit.showLabel ? 3 : 2) - this.parent.commitOffsetX,
y: this.offsetY + this.template.commit.spacingY * (targetCommit.showLabel ? 3 : 2) - this.parent.commitOffsetY + detailOffsetY,
type: "joint"
};
this.pushPath(_clone(endOfBranch));
var mergeCommit = {
x: targetCommit.x,
y: targetCommit.y,
type: "end"
};
this.pushPath(mergeCommit);
endOfBranch.type = "start";
this.pushPath(endOfBranch); // End of branch for future commits
}
// Auto-render
this.parent.render();
// Checkout on target
this.parent.HEAD = targetBranch;
// Return the main object so we can chain
return this;
};
/**
* Calcul column
*
* @this Branch
**/
Branch.prototype.calculColumn = function () {
var candidates = [];
for (var i = 0, branch; !!(branch = this.parent.branches[i]); i++) {
if (!branch.isDeleted) {
if (!(branch.column in candidates)) {
candidates[branch.column] = 0;
}
candidates[branch.column]++;
}
}
this.column = 0;
for (; ; this.column++) {
if (!(this.column in candidates) || candidates[this.column] === 0) {
break;
}
}
};
/**
* Push a new point to path.
* This method will combine duplicate points and reject reversed points.
*
* @this Branch
*/
Branch.prototype.pushPath = function (point) {
var lastPoint = _getLast(this.path);
if (!lastPoint) {
this.path.push(point);